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Forces and Motion Retrieval 2

Total soal: 10

Worksheet time: 5mins

Nama
Kelas
Tanggal
1.

What is needed to calculate work?

a)

force

b)

distance

c)

time

d)

mass

2.

A soccer player kicks a ball with 20 Newtons of force causing it to travel 100 meters. How much work is done on the ball?

a)

200 J

b)

80 J

c)

5 J

d)

2000 J

3.

Energy is measured in.....

a)

kilograms

b)

metres per second

c)

Joules

d)

metres

4.

When a kettle boils, energy is transferred from the electrostatic store to the _________________ energy store.

a)

chemical

b)

kinetic

c)

elastic

d)

thermal

5.

In the equation for gravitational potential energy, 'Ep' stands for

a)

electrical energy

b)

elastic potential energy

c)

kinetic energy

d)

gravitational potential energy

6.

What is the gravitational potential energy of an 85 kg mountain climber at the summit of a 6267 m volcano?

Let g = 9.8N/kg

a)

5,220,411 J

b)

532,695 J

c)

73.7 J

d)

54,356.6 J

7.

Which energy store is missing? Magnetic, electrostatic, nuclear, gravitational, elastic, thermal, chemical and....

a)

heating

b)

lighting

c)

kinetic

d)

sounding

8.
What is the KE of a football which has a mass of 0.8 kg and is kicked at a velocity of 10m/s.
a)
80 J
b)
3.2 J
c)
160 J
d)
40 J
9.
What is the kinetic energy of a 1500 gram object moving at a velocity of 100 m/s
a)
112.5 J
b)
7,500,000 J
c)
75 J
d)
7,500 J
10.

The Law of Conservation of Energy states:

a)

Energy can created or destroyed but not transformed

b)

Energy cannot be created or destroyed, it can only transformed

c)

Energy can't be created, destroyed or transformed

d)

Energy cannot be created or destroyed.