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WorksheetsEnergy, Work & Power with a bit of motion!
Total questions: 45
Worksheet time: 2hrs 39mins
SI units of force are
Newtons
grams
joules
meters
SI units for work done are
Newtons
joules
meters
seconds
if you push a cart with a force of 80 N for 4 m... how much work have you done?
320 J
32 J
320 N
32 N
What is the formula we can use to calculate work done?
Force = work x distance
Distance = force x work
Work = force x distance
Work = force x mass
Jemima kicks a ball with a force of 30N to George, who is 15m away across the park. How much work was done to the ball?
25 J
150 J
100 J
75 J
If 40N of force is applied to Abigail's 20 kg go-cart over a distance of 500 metres, how much work is done?
10 000 J
400 000 J
40 000 J
20 000 J
If the mystery machine moves 100 metres how much work is done? Resolve the forces first!
130,000,000 J
70,000 J
100,000 J
30,000 J
When you stretch a rubber band, you are storing __________ energy.
kinetic
elastic potential
neither of the above
both of the above
When this pendulum swings, at which point is potential energy at its greatest?
1
2
3
4
Energy due to motion is also known as ____________ energy.
Gravitational Potential
Thermal
Kinetic
Friction
At which point is kinetic energy greatest for the rollercoaster?
W
X
Y
Z
Which of the following is the best example of work being done?
doing your homework
lifting a heavy box
pushing a stationary box
holding a box still above your head
Which point on this diagram shows the ball where it has the most gravitational potential energy?
D
G
B
A
What is happening to the energy of the girl from point A to point B
energy in the kinetic store transfers to the gravitational potential energy store
energy in the gravitational potential energy store transfers to the kinetic energy store
energy is being lost
energy is being gained
When does the tennis ball have the greatest potential energy?
A
B
C
D
With all of his Batgear on, Batman has a mass of 90.7 kg. How much work does he have to do to get to his perch on top of a 1,575 m building?
142.9 kN
142.9 kJ
1.429 MN
1.429 MJ
An aircraft is taking a group of skydivers up into the air. Evan is dressed in his parachuting outfit, which brings his mass to a total of 90.0 kg. The aircraft takes the group to a height of 5000.00 m before the jump. How much work is done in getting Evan safely back to the ground?
450 kJ
450 kN
4.5 MJ
4.5 MN
Which is the definition of Power?
Rate of Energy Transfer
Rate of doing Work
Calculate the acceleration when : A motorcycle rider increases his speed from 25 m/s to to 55 m/s in 10 seconds
2.5 m/s²
4 m/s²
3 m/s
3 m/s²
Calculate the acceleration when : The Eagles are playing the Patriots in Super Bowl 52. The score is Eagles 31 Patriots 27 with two minutes left. The quarterback throws a deep ball to a team mate - the velocity of the football increases from 10m/s to 40 m/s in over a 5 second period.
6 m/s²
10 m/s²
8 m/s²
30 m/s²
Calculate the acceleration when : A running horse increases his speed from 15 m/s to 42 m/s in 3 seconds.
27 m/s²
5 m/s²
9m/s²
11 m/s²
Timothy sprinted down the hallway to get to Mrs Gamble's science lesson. He ran a total of 40 metres in 20 seconds. What was his average speed?
2 metres per second
20 metres per second
40 metres per second
10 metres per second
What is the speed of a swordfish that swims 60 metres in 4 seconds?
240 m/s
15 m/s
0.067 m/s
15 mph
Monica was trying to explaining to Ross how to find the speed of a moving dinosaur. What equation should she use to calculate average speed?
speed = time/distance
speed = distance X time
speed = voleicty X time
speed = distance/time
A fullback threw a ball 25.0 metres. The rugby ball's time in the air was 4.0 seconds. What speed did the ball travel through the air?
100 m/s
0.0625 m/s
6.25 x10-2 m/s
6.25 m/s
At a track meet, Chandler ran the 5000 metre race at an average speed of 6.0 metres per second. How long did it take him to complete the race in minutes?
14 min
140 min
28 min
112 min
Calculate the KE of a moving 4 kilogram shot put traveling at a velocity of 3 m/s.
18 J
36 J
12 J
6 J
A moving 10 kilogram golden retriever has 20 Joules of KE. What is its velocity?
2 m/s
4 m/s
200 m/s
10 m/s
As the velocity of an object decreases its Kinetic Energy store will...
increase
decrease
stay the same
The Law of Conservation of Energy states that
energy cannot be created nor destroyed, only transformed or transferred
energy can be destroyed but not created
energy can be created but not destroyed
What is the mass of a moving object that has 100 Joules of KE and moves at a velocity of 2 m/s?
50 kg
200 kg
25 kg
100 kg
A 60.0 kg person walks from the ground to the roof of a 74.8 m tall building. How much gravitational potential energy does she have at the top of the building?
43982.4 J
63982.3 J
43962.4 J
83942.4 J
Which of the following is the correct equation for calculating an object's gravitational potential energy?
GPE = mgh
GPE = mg / h
GPE = mg + h
GPE = gh
What is the value of the Earth's acceleration due to gravity (g)?
9.8 m/s2
100 m/s2
25 m/s2
3.14 m/s2
What is the gravitational potential energy (GPE) of a 1 kilogram book that is 1 meter above the ground?
g = 9.8 m/s2
9.8 Joules
1.0 Joule
0.10 Joule
11.8 m/s2
How much gravitational potential energy does a 350g cricket ball have when it is sat on a shelf 2.4m up? Assume g = 10 m/s2
8400J
8.4J
84J
0.84J
Isobel knocks a photo album off the top of her wardrobe. The wardrobe is 1.5m high. Just before it hits the floor, the kinetic energy of the photo album is 25.5J. What is the mass of the book? Assume g = 10 m/s2
3.4kg
17kg
8.5kg
1.7kg
Which of these equations can be used to calculate Kinetic Energy (KE)?
KE = 2mv2
KE = mgh
KE = 0.5mv2
KE = √mv2
Power
power = work x time
power = work done / time
power = time / work
Energy transferred
energy transferred = power × time
energy transferred = power / time
energy transferred = time / power
What other information is needed to calculate the useful work done in lifting the bricks?
A winch is used to lift a barrel up the side of a fishing trawler 3.5m from the sea surface. It transfers 7.5kJ of useful energy in lifting the barrel and the whole job takes 15 seconds. What is the power output of the winch?
5 W
50 W
500 W
393.75 W
A motor on a drone transfers 3600J of useful energy to the blades in 4 minutes. Work out the power output of the motor.
864 kW
14400 W
900 W
15 W
