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Work Done and GPE

Total questions: 25

Worksheet time: 32mins

Name
Class
Date
1.
There is a bell at the top of a tower that is 45 m high. The bell weighs 100 kg. What is the potential energy of the bell?
a)
980 J
b)
441 J
c)
4,500 J
d)
44,100 J
2.
The acceleration of an object due to gravity on Earth is...
a)
8.9 m/s2
b)
9.8 m/s2
c)
It depends on the mass of an object
d)
Equal to its kinetic energy
3.
Which of the following affects the gravitational potential energy of an object?
a)
The mass of the object
b)
The height of the object
c)
The velocity of the object
d)
Both the mass and height of the object
4.

What is the correct unit for energy?

a)

meters (m)

b)

kilogram meters per second (kg m/s)

c)

Newtons (N)

d)

Joules (J)

5.

Energy that is stored (not in use, not moving)

a)

Kinetic energy

b)

Mechanical energy

c)

potential energy

d)

thermal energy

6.

Energy that is associated with motion

a)

Kinetic energy

b)

Mechanical energy

c)

Potential energy

d)

Thermal energy

7.

At what point does the high jumper have the greatest amount of potential energy?

a)

While running towards the high jump

b)

At the top of the poles during the jump

c)

When landing on the mat after the jump

d)

Halfway up the poles during the jump

8.
Energy is the ability to do _____________ or cause change.
a)
work
b)
rest
c)
experiments
d)
science
9.

A force of 20 N moves an object over a distance of 70 metres. Calculate the work done.

(a)  

10.

A force of 100 N moves an object over a distance of 35 metres. Calculate the work done.

(a)  

11.

A force of 30 N moves an object over a distance of 2 metres. Calculate the work done.

(a)  

12.

A force of 600 N moves an object over a distance of 18 metres. Calculate the work done.

(a)  

13.

3500 J of work is done moving an object over a distance of 35 metres. What force was used to move the object?

(a)  

14.

1.95 kJ of work is done moving an object over a distance of 150 metres. What force was used to move the object?

(a)  

15.

A force of 20 N does work on an object equal to 1400 J. How far did the object move?

(a)  

16.

What is the unit for distance?

a)

Newton (N)

b)

Joule (J)

c)

Watt (W)

d)

Meter (m)

17.

What is the unit for force?

a)

Newton (N)

b)

Joule (J)

c)

Watt (W)

d)

Meter (m)

18.
Which of the following is the best example of work being done. 
a)

standing

b)
lifting a box
c)

Walking

19.
What is being transferred as you do work?
a)
Energy
b)
Heat
c)
Power
d)
Gravitational Potential Energy
20.

Bob (80 kg) uses 180 N of force to get him up the slope. The vertical distance is 2 m and the diagonal is 10 m. Calculate the work he does.

a)

1600 J

b)

160 J

c)

3600 J

d)

1800 J

21.
gravitational potential energy is defined as
a)
the energy an object has due to its height above the ground
b)
the energy an object has due to its motion
c)
the energy a spring has due to its stretch
d)
the chemical energy stored in the molecules of atoms
22.
What is the formula for Gravitational Potential Energy?
a)
PE = m*g*h
b)
KE = 1/2m*v2
c)
W = F*d
d)
P = W/t
23.

Where does the pendulum have the greatest potential energy? (pick 2)

a)

A

b)

B

c)

C

d)

D

e)

E

24.

Match the following

a)

Force

1.

Newtons

b)

Energy

2.

Joules

c)

Distance

3.

Metres

d)

GPE =

4.

m x g x h

e)

Work Done =

5.

F x d

25.

Reorder the following in order of size (biggest first)

a)

2km

b)

2200m

c)

2x104m

d)

2m

e)

2500mm

1)
2)
3)
4)
5)

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