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Physical Science Pressure and Energy Review

Total questions: 25

Worksheet time: 44mins

Name
Class
Date
1.
Energy due to motion is ____________ energy. 
a)
Potential 
b)
Energy
c)
Kinetic
d)
Friction
2.
What kind of energy is in a rock at the edge of a cliff?
a)
Potential
b)
Kinetic
c)
Both potential and kinetic energy
d)
none of the above
3.
You serve a volleyball with a mass of 2 kg. The ball leaves your hand with a speed of 30 m/s. What is the KE of the ball?
a)
900 J
b)
1800 J
c)
60 J
d)
30 J
4.
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
5.

An 2 kg apple is hanging in a tree, 10 m off the ground. What is the gravitational potential energy of the apple?

a)

19.6 J

b)

20 J

c)

98 J

d)

196 J

6.
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
7.
Which of the following has the greatest amount of gravitational potential energy?
a)
A 20 kg projector suspended 10 m in the air
b)
A 100 kg wrecking ball suspended 10 m in the air
c)
A 5 kg basketball suspended 10 m in the air
d)
They all have the same GPE because they are all 10 m in the air
8.

What is the kinetic energy of a soccer ball which has a mass of 0.8 kg and is kicked with a velocity of 10 m/s?

a)

40 J

b)

41 J

c)

4 J

d)

80 J

9.

Calculate the kinetic energy of a running back that has a mass of 80 kg and is running as a velocity of 8 m/s.

a)

320 J

b)

2650 J

c)

2560 J

d)

5120 J

10.

A polar bear has an average mass of 500 kg. If its maximum kinetic energy is 60500 J, what is its top speed?

a)

242 m/s

b)

121 m/s

c)

15.56 m/s

d)

15,125,000 m/s

11.

An airplane designed to carry a space shuttle has a top speed of 240 m/s, at which its kinetic energy is 100,800,000 J. What is its mass?

a)

1750 kg

b)

4100 kg

c)

6500 kg

d)

3500 kg

12.

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

a)

5,220,411 J

b)

532,695 J

c)

73.7 J

d)

54,356.6 J

13.

The world record for pole vaulting is 6.15 m. I the pole vaulter’s gravitational potential energy is 4942 J, what is his mass?

a)

803.6 kg

b)

504.3 kg

c)

30,393.3 kg

d)

82 kg

14.

An Olympic high jumper, with a mass of 82 kg, has a maximum gravitational potential energy of 1970 J. How high was the jump?

a)

24 m

b)

161,540 m

c)

2.5 m

d)

201 m

15.
On a roller coaster, where is maximum potential energy?
a)
At the bottom of a big hill
b)
When going around a corner
c)
When going upside down
d)
At the top of a big hill
16.
The amount of force pushing on an area is the definition of....
a)
Fluid
b)
Viscosity
c)
Barometer
d)
Pressure
17.
Look at the pressure triangle. How do we calculate the area?
a)
f ÷ a
b)
f x p
c)
p x f
d)
f ÷ p
18.

The pressure resulting from a force of 50 N exerted over an area of 5 cm2 is

a)

1 kPa

b)

0.1 kPa

c)

10 kPa

d)

0.01 kPa

19.

What area is a 100 N force spread over if it creates 50 kPa?

a)

0.2 cm2

b)

20 cm2

c)

2 cm2

d)

10 cm2

20.

What is the force applied to the floor if it is spread out over 20 cm2 and registers a pressure of 10 kPa?

a)

2 N

b)

20 N

c)

200 N

d)

0.2 N

21.
There are 40 liters of helium in a balloon at 100 K. If the temperature of the balloon is increased to 200 K, what will the new volume of the balloon be?
a)
80 L
b)
45 L
c)
54 L
d)
45.33 L
22.
10 L of a gas is collected at 100 K and allowed to expand to 30.0 L. What is the new temperature?
a)
400 K
b)
300 K
c)
275 K
d)
250 K
23.
What is the formula for Gay-Lussac’s Law?
a)
P1/T1 = P2/T2
b)
P1/V1 = P2/V2
c)
T1/P1 = T2/P2
d)
 P1•T1 = P2 • T2
24.
What is the formula Charles' Law?
a)
V = T
b)
VT = VT
c)
T1 / V1 = T2 / V2
d)
V1 / T1 = V2 / T2
25.
A gas has a pressure of 1.50 atm at a temperature of 273 K.  What will be the pressure at 410 K?
a)
.99 atm
b)
2.25 atm
c)
.75 atm
d)
2.5 atm

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