After rolling halfway down an
incline, a marble's kinetic energy is
A) maximum
B) minimum
C) reduced by half
D) = 1/4mv2
The power required to exert
4-n force over 3 meters in 2 seconds is
A)12watt
B) 8watt
C) 6 watt
D) 2.77watt
The power expended doing 100
j of work in 50 s is
A) 5000waat
B) 2wats
C)50watt
D) 500watt
A ball rolling down an
incline has its maximum potential energy at
A) halfway
B) at the top
C) down
D) just before landing
The bob of a simple pendulum
has its maximum kinetic energy at the
A) just before swinging
B) just after swinging
C) halfway
D) just before reaching the
other end
D) at the other end
The work done in pushing a tv
set a distance of 2 m with an average force of 20 n is
A) 40j
B) 10j
C) 2400j
D) 240j
A 10.0 kg rock is at the top
of a 20.0 m tall hill how much potential energy does it have
A) 20j
B) 200j
C)2000j
D)0.5j
How high up is a 3.00 kg
object that has 300. J of energy
A) 100m
B) 10m
C)900m
D)1m
A 25 n object is 3.0 meters
up. How much potential energy does it have
A) 75j
B) 750j
C)7j
D) 28j
You push down on a 3.0 n box
for 10 minutes how much work was done
A) 30j
B)0.3j
C) 1800j
D)600j
A 25 kg ball is thrown into
the air when thrown it is going 10 m/s calculate how high it travels
A) 250m
B)2500m
C) 5m
) 50m
A 4768 kg roller coaster is
3m high, its potential energy is?
A) 4768j
B) 40768
C)
You use 35 j of energy to
move a 7.0 n object. How far did you move it?
A) 5m
B) 7m
C) 175m
D) none of the above
A 10 kg ball is thrown into
the air it is going 3.0 m/ s, is k.e is?
A) 90j
B)45j
C) 30
D)15
A 200-kg boulder is 1000-m
above the ground, its p.e is?
A) 200kj
B) 200j
C) 2mj
D) 10000j
A pendulum at 0.5m up has 15-j of potential energy at the top of
its swing, its mass is?
A)3kg
B) 5kg
C) 30kg
D)7.5kg
A 1 kg ball is 10 m above a
table when it is dropped, it p.e is
A) 100j
B)10j
C) 200j
D) 500j
Which has greater kinetic
energy?
A) 5kg monkey on 5m top tree
B) 15kg man in 100m top
building
C) 50kg cement used to build
a 100m top tower
D) 5g fly flying for 30s.
An airplane travels at 141
km/h toward the northeast. What is its component of velocity due north?
Answer this question
Danny diver weighs 500 n and
steps off a diving board 10 m above the water, his p.e is
A) 5000j
B) 500j
C) 50j
D) 5j
A car is traveling with a
velocity of 40 m/s and has a mass of 1120 kg, its k.e is?
A) 896000j
B) 89600j
C)4480j
D)96000j
What is the kinetic energy of
a 3 kilogram ball moving at 3m/s
A) 36j
B) 18j
C) 24j
D) none of the above
The potential energy of an
apple is 6.00 joules at 3m, its mass is?
A) 0.2kg
B) 2kg
C) 4kg
D) 8kg
What is the kinetic energy of
a 2000 kilogram boat moving at 0.5m/s
A) 500j
B)1000j
C)125j
D) 75j
What is the velocity of a 500
kilogram elevator that has 4000 joules of energy
A) 12.65 m/s
B) 16m/s
C) 12 m/s
D) 4 m/s
What is the kinetic energy of
a 3 kilogram ball that is rolling at 2 meters per second
A) 6j
B)12j
C) 8j
D) 0.5j
What is the potential energy
of a 2-kilogram potted plant that is on a 1 meter-high plant stand
A) 20kg
B) 2kg
C) 40kg
D) none of he above
What is the mass of an object
that creates 33750 joules of energy by traveling at 30 m/sec
A) 75kg
B) 57kg
C) 150kg
D) 300kg
What is the mass of an object
traveling at 30m/s if it has 33 750 j of energy
A) 75kg
B) 57kg
C) 150kg
D) 300kg
50.0 kg gorilla is sitting on the limb of a
tree 4.00 meters above the ground. It p.e is?
A) 2000j
A) 1000j
C) 200j
D) 20j
How high up is a 3.00 kg
object that has 300. J of energy
A) 10m
B) 100m
C) 30
D) 900m
A 2kg ball is dropped from
the top of a 10 m high building, it k.e is ?
A) 20j
B) 200j
B) 200
C) 2j
You move a 25 n object 4
meters. Find the work you did
A) 10n
B) 100n
C) 100j
D) 1000j
How much work is it to lift a
20kg sack of potatoes 20cm up
A) 4j
B)40j
C) 400j
D) 4000j
If a small motor does 520 j
of work to move a toy car 260m what force does it exert
A) 2n
B) 135200j
C) 1352j
D) 1200j
Calculate the work done by a
47 n force pushing a 0.025 kg pencil for 5m
A) 235j
B) 0.123j
C) 34j
D) none of the abpve
Calculate the work done by a
2.4 n force pushing a 400g for 5m
A) 12j
B)120j
C) 24j
D) 400j
What is the gravitational
potential energy of a 61.2 kg person standing
A) 61.2j
B) 612j
C) 6.12j
D) 12j
Calculate the work done by a
47 n force pushing a pencil 0.26 m
A)12.22
B) 47j
C) 26
D) none of the above
How much work is it to lift a
20kg sack of potatoes 0.5m
A) 20j
B) 200j
C) 100j
D) 10
How much power does it take
to lift 30.0 n 10.0 m high in 5.00 s
A) 60j
B)6j
C) 600j
D) 200j
A boy on a bicycle drags a
wagon full of newspapers at 0.80 m/s , find
k.e if its weigh 50kg
A) 32j
B) 16j
C) 8j
D) 4j
You push down on a 3.0 n box
for 10 minutes. How much work was done
Answer this question
A 4 kg bird has 8 joules of
kinetic energy. How fast is it flying
A) 4m/s
B) 2m/s
C) 32m/s
D)2km/h
A 25 n object is 3 meters up,
it p,e is?
A) 75j
B) 750j
C) 25oj
D) 300j
You use 35 j of energy to
move a 7 n object to?
A) 5m
B) 35m
C)7m
D) 40m
A rolling ball has 18 joules
of kinetic energy and is rolling 3 m/s. Find its mass
A) 2kg
B) 4kg
B) 8kg
D) 9kg
A rock is at the top of a 20
meter tall hill has 200j finds its mass
A) 10kg
B) 100kg
C) 1kg
D) 10g
Find the work done by a 25 n
force applied for 6 meters
A)125j
B) 250j
C) 4.16j
Calculate the potential
energy of a 5 kg object sitting on a 3 m ledge
A) 15j
B) 1.5j
C) 20j
D) 30j
If we know the total energy
in a system is 30 j its kinetic and potential energy is?
A) 90j
B) 60j
C) 30j
D) 15j
A 4 kg rock is rolling 10m/s,
it k.e is?
A) 200j
B) 100j
C) 400j
D) 500j
A 25 kg mass or a 30 kg mass
at the top of a hill has a weight of ?
A) 250 n
B) 30n
C) 55n
D) 250n or 300n
Calculate the potential
energy of a 5 kg object sitting on a 3 meter ledge
A) 150j
B) 50j
C) 15j
D) 30j
What was the difference in
the work to move the object and the work you do
The work
to move an object is what physics is interested in, workdone involving a force
and a displacement. Any workdone with zero displacement is meaningless in
physics
What is the mass of an object
traveling at 30 m s if it has 33750 j of energy
A) 75m/s
B) 900m/s
C) 30m/s
D) 23m/s
What is the kinetic energy of
a 2000 kg boat moving at 5.0 m s
A) 25j
B)2500j
C) 25kj
D) 5000j
What is the potential energy
of a 3 kilogram ball that is on the ground
A) 3j
B) 0j
C)30j
D) 300j
A 1.0 kg ball is thrown into
the air with an initial velocity of 30 m/s, its k.e is?
A) 900j
B) 450j
C) 480j
D) 500j
Which object has more
potential energy when it was lifted to a distance of 10 meters
A) 500g potatoes sack
B) 25kg car
C) 75kg barbell
D) 50kg cement back
What is the kinetic energy of
a 25 kg object moving at a velocity of 2.5 m/s
A) 156.25j
B) 78.125j
C) 80j
D) 120j
An object that is not moving
has
A) chemical energy
B) nuclear energy
C) potential energy
D) kinetic energy
What is the velocity of a 500
kilogram elevator that has 4000 joules of energy
A)4m/s
B) 2m/s
C) 8m/s
D) 20m/s
The potential energy of an
apple is 6.00 joules when when by a 0.5m tall man, it has energy of?
A)1.2m
B) 1.5m
C) 3.5m
D) 3m
What is the mass of an object
that creates 33750 joules of energy by traveling at 30 m sec
A) 75kg
B) 900kg
C) 45kg
D)100kg
What is the kinetic energy of
a 2000 kilogram boat moving at 2m/s
A) 500j
B)4000j
C) 8000j
D) 5000j
What is the kinetic energy of
a 2000 kg boat moving at 5.0 m s
A) 160j
B) 80j
C) 65j
D) 45j
An earth satellite is simply
a projectile freely falling around the earth.
True or false
Without air resistance, a
projectile fired horizontally at 8 km/s from atop a mountain would
A) move to space
B) fall immediately
C) cover a longer distance
D) cover a shorter distance
The force of gravity does
work on a satellite when it is in
A) in circular orbit
B) elliptical orbit
C) tangential orbit
D) earth horizon
E) none of te above
Minimal orbital speed about
the earth is about 8 km/s. Minimal orbital speed about the moon would be
A)5km/s
B) 12.8m/s
C) 10 m/s
D) 7m/s
From earth, one satellite
appears to overtake another. The faster satellite is
A) higher orbit
B) lower orbit
C) circular orbit
D) tangential orbit
Angular momentum is conserved
for a satellite in
A) in circular orbit
B) elliptical orbit
C) tangential orbit
D) earth horizon
E) none of the above
An 80-km/h airplane caught in
a 60-km/h crosswind has a resultant speed of
A)100km/h
B) 90km/h
C) 70km/
D) 120km/h
A bird flying at 8 km/h in a
6-km/h crosswind has a resultant speed of
A) 10km/
B) 12km/h
C) 7km/h
D) 13km/
When no air resistance acts
on a fast-moving baseball, its acceleration is
Is constant, 10m/s same as
Without air resistance, the
time for a vertically tossed ball to return to where it was thrown is
Answer this question
At what point in its path
does a projectile have minimum speed
A) just after starting
B) just before landing
C) when it momentarily stop
C) when it is halfway upward.
A helicopter’s speed
increases from 30 m/s to 40 m/s in 5 seconds. It acceleration is?
A) 2 m/s2
B) 14m/s2
C) 10m/s
D) none of the above
In projectile motion without
friction, the horizontal acceleration is:
A) 10m/s
B) 9.8m/s
C) 0m/s
D) 100m/s
How long does it take a car
to accelerate from 20 m/s to 40 m/s if it accelerates at 5 m/s2
A) 4 sec
B) 12m/s
C) 10m/s
D) 3m/s
A car traveling at a speed of
24 m/s comes to a stop at a red light. Find k.e if it is 200kg
A) 57600j
B) 5700j
C) 115200j
D) 4000j
A motorcycle traveling at
25m/s has a mass of 30kg find its energy
A) 9375j
B) 5679j
C) 300j
D) 650j
An object going from 0 m sec
to 25 m sec in 5 seconds, it acceleration is?
A) 5m/s2
B) 10m/s2
C) 12m/s2
D) none of the above
After traveling for 6.0
seconds a runner reaches a speed of 10m s what is the runner acceleration
A) 1.67m/s2
B) 60m/s2
C) 16m/s2
D) 4m/s2
A car starting from rest
accelerates at a rate of 8.0 m/s/s after 2m find its speed.
A) 16 m/s
B) 960m/s
C) 800m/s
D) 15m/s
While traveling along a
highway a driver slows from 24 m/s to 15m/s in 12 seconds, he accelerates at?
A) -7/12 m/s2
B) 0.583m/s2
C) 0,5833m/s2
How far will you go in 3.0
min traveling 60. Km/hr
A) 16km
B) 3km
C) 180km
D) 20km
You drive a car from
milwaukee to chicago in 95 min, ur speed is?
A) 1.52 km/min
B) 1mile per sec
C) 1.83 km per min
D) 60km/h
What is the speed of a car
that travels 150 km in 20minutes
A) 125m/s
B) 254m/s
C) 0.124km/s
D) 40m/s
Convert 36 km/hr to m/s
A) 10m/s
B) 20 m/s
C) 40m/s
D) 30m/s
A vehicle that goes from 5
m/s to 45m/s in 8s. What is its acceleration
A) 5m/s/s
B) 25m/s/s
C) 34m/s/s
D) 15m/s/s
What is the acceleration of a
vehicle that goes from 70 m/s to a stop in 35 s
A) 2m/s/s
B) 4m/s/s
C) 8m/s/s
D) 16 m/s/s
What is the acceleration of a
bike that goes from 38 km/hr to a stop in 4.5 s
A) 2.345m/s/s
B) 10m/s/s
C) 12m/s/s
D) 121m/s/s
A helicopter's speed
increases from 25 m/s to 60 m/s in 5 seconds its. Aceleration is
A) 7m/s/s
B) 3m/s/s
C) 125m/s/s
D) 300m/s/s
What is the speed of a bus
that travels 250.0 km in 2.00 hours?
A) 125km/h
B) 100km/h
C) 120km/h
D) 10km/h
The cheetah, which is the
fastest land mammal, can accelerate from 0.0 mi/hr to 70.0 mi/hr in 3.0 seconds
A) 23.33mi/hr/hr
B) 23.3mi/hr/hr
C) 3.33mi/hr/hr
D) 2.33mi/hr/hr
A car accelerates at a rate
of 3.0 m/sec/sec in 2s , its speed is?
A) 1.5/sec
B) 15m/s
C) 2m/s
D) 14m/s
A vehicle that goes from 5
m/s to 45m/s in 8s. What is its acceleration
A) 5m/s/s
B) 10m/s/s
C) 40m/s/s
D) none of the above
If a rocket travels 5600 km
in 3.00 hours what is its speed
A) 1866km/hr
B) 1866.6km/hr
C) 2000km/hr
D) none of the above
How long will it take to
travel 200 km traveling 100 m/s
A) 2km/s
B) 20m/s
C) 200m/s
D) none of the above
What distance will a car
traveling 65 km/hr travel in 3.0 hrs
A) 21.6km/hr
B) 10m/s
C) 5m/s
D) 13km/hr
A vehicle travels 2345 m in
315 s toward the evening sun. What is its velocity?
A) 7.44m/s
B) 8.44
C) 9.7m/s
D) 12m/s
How far will you go in 3.0
min traveling 60. Km/hr
A) 333.33km
B) 180km
C) 30km/
D)333km
E) 3km
What distance will be
traveled if you are going 120 km/hr for 30. Min
A) 33.33km
B) 1000km
C) 5.9994km
D) none of the above
No comments:
Post a Comment