Free Printable Final Exam Review Pt5

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.

Which point has the most potential energy?

a)

G

b)

f

c)

b

d)

a

7.

A 0.40 kilogram bird is flying at a constant speed of 8.0 m/s. What is the bird's kinetic energy ?

a)

3.2 J

b)

4.2 J

c)

2.0 J

d)

12.8 J

8.

A 2600 kilogram car is moving at a speed of 25 m/s. How much kinetic energy does the car have?

a)

427,500 J

b)

237,500 J

c)

812,500 J

d)

537,500 J

9.

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?

a)

44027.28 J

b)

63982.3 J

c)

43962.4 J

d)

83942.4 J

10.

A pitcher throws a 0.145 kg baseball at a velocity of 30.0m/s. How much kinetic energy does the ball have?

a)

65.35 J

b)

87.25 J

c)

23.45 J

d)

65.25 J

11.

When a 5-kilogram object is lifted from the ground to a height of 10 meters, the gravitational potential energy of the mass is increased by approximately?

a)

0.5J

b)

2J

c)

50J`

d)

490J

12.

It takes 87J of work to stretch an ideal spring with a spring constant of 27.84 n/m. What is the length of the spring?

a)

2.2m

b)

1.7m

c)

2.5m

d)

1.5m

13.

A 90kg man climbs up a rope. At the top, his potential energy is 8,361.06 J. How high does the man climb up the rope?

a)

5.12m

b)

9.47m

c)

8.32

d)

4.15m

14.

The formula "Force x Distance" is used to solve for (a) .

15.

This formula " $\frac{Work}{Time}$ " is used to solve for (a) >

16.

This formula " $\frac{Force\ x\ Displacement}{Time}$ " is used to solve for (a) .

17.

This formula " $\frac{1}{2}\ x\ Mass\ x\ Velocity^2$ " is used to solve for (a) .

18.

This formula " $\frac{Mass\ x\ Velocity}{Time}$ " is used to solve for (a) .

19.

Potential Energy has two types. Which are they? **there can be more than one answer**

a)

Elastic Potential Energy

b)

Height Energy

c)

Gravitational Potential Energy

d)

Small Energy

e)

Big Energy

20.

The formula "Mass x Gravity x Height" is used to solve for (a) .

21.

The formula " $\frac{1}{2}\ \times K\ \times X^2$ " is used to solve for (a) .

22.

In the Formula " $PEe\ =\ \frac{1}{2}\times\ K\ \times\ X^2$ " what does the K represent?

(a)

23.

In the Formula " $PEe\ =\ \frac{1}{2}\times\ K\ \times\ X^2$ " what must be done if you are given two distances for $X^2$ ?

(a)

24.

A kid applies a force of 70 N to a ball over 1.1 meters. How much work did he do on the ball?

a)

77 J

b)

7.7 J

c)

0.7 J

d)

770 J

25.

Simple machines make work easier by increasing what?

a)

The distance over which work is done

b)

The force needed to do work

c)

The time required to do work

d)

The acceleration of a massive object

26.

You move a 12-newton box up a 6-meter ramp. In order to find out how much power you created, what would you need to know?

a)

The mass of the box

b)

The slope of the ramp

c)

The direction the box moved

d)

How long the task took

27.

You do 90 joules of work in 30 seconds. How much power have you generated?

a)

30 watts

b)

3 watts

c)

120 watts

d)

270 watts

28.

You move an 8-newton weight five meters in 4 seconds. How much power have you generated? *this is a 2 step problem*

a)

160 watts

b)

10 watts

c)

6.4 watts

d)

17 watts

29.

Which of the following would produce the most power?

a)

A mass of 10 kilograms lifted 10 meters in 10 seconds

b)

A mass of 10 kilograms lifted 10 meters in 5 seconds

c)

A mass of 5 kilograms lifted 10 meters in 5 seconds

d)

A mass of 5 kilograms lifted 5 meters in 10 seconds

30.

Work divided by time equals...

a)

energy

b)

power

31.

The unit of work is the ...

a)

joule

b)

force

32.

The unit of power is the...

a)

work

b)

watt

33.

Force multiplied by distance equals...

a)

work

b)

power

34.

Work is done on an object when the object moves in the SAME direction in which the force is applied.

a)

True

b)

False

35.

The FARTHER you move an object, the more work you do.

a)

True

b)

False

36.

If you lift a box from the floor to a height of 1m and then carry the for for 10m, you do work only when you CARRY the box.

a)

True

b)

False

37.

What is needed to calculate work?

a)

force

b)

distance

c)

time

d)

mass

38.

A 100 N force is applied to move a 15 kg object a horizontal distance of 5 meters at constant speed. How much work is done?

a)

20 J

b)

1,500 J

c)

500 J

d)

300 J

Final Exam Review Pt5

Total questions: 38

Worksheet time: 6hrs 20mins

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