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Energy

Total questions: 20

Worksheet time: 51mins

Name
Class
Date
1.
Energy due to motion is ____________ energy. 
a)
Potential 
b)
Energy
c)
Kinetic
d)
Friction
2.
The faster an object moves, the ________ kinetic energy it has. 
a)
more
b)
less
c)
none of the above
d)
all of the above 
3.
__________ is stored energy. 
a)
Potential
b)
Kinetic
c)
None of the above 
d)
All of the above 
4.
Gravitational potential energy depends on the ________ and ________ of the object. 
a)
Height and mass
b)
Friction and movement
c)
Mass and Movement
d)
Height and Friction 
5.
At which point is potential energy greatest?
a)
W
b)
X
c)
Y
d)
Z
6.
At which point is kinetic energy greatest? 
a)
W
b)
X
c)
Y
d)
Z
7.
Energy can be _____________ or changed from one type to another.
a)
destroyed
b)
transferred
c)
created
d)
ignored
8.
__________ energy is the energy of motion.
a)
Light
b)
Sound
c)
Kinetic
d)
Chemical
9.
Which of the following is an exmaple of a change of kinetic energy into gravitational potential energy?
a)
a person parachuting out of a plane
b)
a car racing around an oval track
c)
a person skiing down a hill
d)
a person walking up a hill
10.
If the skier is at the top of the hill waiting for the whistle to blow for his turn to ski, he has ____________, after the whistle blows and he starts his ski run, he has ___________ .
a)
kinetic energy; potential energy
b)
potential energy; friction
c)
kinetic energy; gravity
d)
potential energy; kinetic energy
11.

What is the unit for Energy?

a)

Joules

b)

Kilograms

c)

Metres

d)

Newtons

12.

How much gravitational potential energy does a 17kg ball at a height of 5.3m have?

a)

883 J

b)

756J

c)

950J

d)

1023J

13.

How much gravitational potential energy does a 1500kg car at a height of 52m have?

a)

500000J

b)

678000J

c)

764400J

d)

812300J

14.

What is the mass of a box with 550J of potential energy at a height of 3m?

a)

18.7 kg

b)

15.2kg

c)

13.8 kg

d)

20.2 kg

15.

What is the mass of a rock which sits on top of a 120m tall cliff with 250 kJ of potential energy?

a)

205.7 kg

b)

212.6 kg

c)

230.0kg

d)

260.5 kg

16.

A student of mass 58.8 kg climbs the 247 steps of the Scott Monument in Edinburgh. In doing so, the student gains 36000J of potential energy. Calculate the height gained by the student.

a)

63m

b)

53m

c)

62m

d)

70m

17.

An astronaut of mass 65kg gains 2288J of potential energy when climbing to a height of 22 m on the Moon. Calculate the graivational field strength on the Moon.

a)

1.6

b)

1.0

c)

5.8

d)

9.8

18.

Calculate the kinetic energy of a toy car of mass 4.0 kg moving at a speed of 3.0 ms-1.

a)

18 J

b)

21J

c)

24J

d)

27J

19.

Calculate the mass of a bowling ball moving at a speed of 2.0 ms-1 with a kinetic energy of 7.6 J.

a)

1.95kg

b)

2.05kg

c)

3.8kg

d)

1.55kg

20.

Calculate the speed of a 80kg skier moving with a kinetic energy of 5.7 kJ.

a)

11.9ms-1

b)

11.5ms-1

c)

13.0ms-1

d)

14.2ms-1

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