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Force and Motion

Total questions: 35

Worksheet time: 18mins

Name
Class
Date
1.

The data table is for the motion of a runner who runs a total distance of 10 meters. What is the average speed of the runner from start to finish?

a)

2.5 m/s

b)

40 m/s

c)

0.4 m/s

d)

3 m/s

2.

Which of the graphs shows an object that is NOT in motion?

a)

A

b)

B

c)

C

d)

D

3.

The space shuttle Endeavor is launched to altitude of 500 km above the surface of the Earth. The shuttle travels at an average rate of 700 km/s. How long will it take for Endeavor to reach its orbit?

a)

1200 seconds

b)

1.4 seconds

c)

350,000 seconds

d)

0.71 seconds

4.

Natalie accelerates her skateboard along a straight path from 0 m/s to 4.0 m/s in only 2.5 seconds. What is her average acceleration?

a)

−1.6 ms2-1.6\ \frac{m}{s^2}  

b)

1.6 ms21.6\ \frac{m}{s^2}  

c)

−10 ms2-10\ \frac{m}{s^2}  

d)

0.63 ms20.63\ \frac{m}{s^2}  

5.

At 9:00 pm, lady bug #1 crossed the 3 cm mark with a velocity of 4 cm/min. In a great burst of energy, ladybug #1 raced to the 5cm mark in 3 minutes. Her velocity as she crossed the 5 cm mark was 7 cm/min. What was the acceleration of ladybug #1?

a)

3 cmmin⁡23\ \frac{cm}{\min^2}  

b)

−2 cmmin⁡2-2\ \frac{cm}{\min^2}  

c)

1 cmmin⁡21\ \frac{cm}{\min^2}  

d)

−1 cmmin⁡2-1\ \frac{cm}{\min^2}  

6.

Which of the following is NOT a property of forces?

a)

Forces can make objects start moving

b)

Forces can make objects move faster.

c)

Forces can make objects change shape.

d)

Forces do not affect motion.

7.

Beth drops a feather and a marble from the same place at the same time. She notices that the feather falls to the ground much slower than the marble. Which of the following statements best explains Beth's observation?

a)

Inertia causes the feather to become lighter as it falls to Earth's surface.

b)

Gravity pulls them both to Earth at the same speed and they both should fall at the same time

c)

Air resistance acts on the feather causing it to fall slower.

d)

The mass of the feather is not great enough to increase its speed; therefore, it falls slower.

8.

What is the net force necessary for a 150 kg tractor to accelerate forward at 3 m/s2?

a)

50 N50\ N  

b)

450 N

c)

0.02 N

d)

300 N

9.

Which one of Newton's three laws of motion is being illustrated in the drawing?

a)

Newton's law of universal gravitation

b)

Newton's first law of motion, the law of inertia

c)

Newton's second law of motion, F=MA

d)

Newton's third law of motion, action=reaction

10.

Eddy and Gamby traveled during the holidays to visit their family members in Atlanta. The distance and driving time are shown in the graph below.

a)

They stopped often along the way

b)

They traveled at a fairly constant velocity.

c)

They were different drivers at different times during the journey.

d)

They were driving slowly at first, but their velocity increased every hour.

11.

Imagine an object sitting on a frictionless surface. If a 16N force is applied to the object and its acceleration in 2 m/sec2, what is the mass of the object? (Hint: use your formula pie charts)

a)

4kg

b)

8 kg

c)

16 kg

d)

32 kg

12.

What two properties determine the force of gravity between two objects?

a)

their masses and their velocities

b)

their inertia and their accelerations

c)

their weights and their accelerations

d)

their masses and the distance between them.

13.

What important distinction between mass and weight is illustrated in this diagram?

a)

You mass is always 1/6 lighter than your weight on the moon.

b)

Your mass is greater on the moon, while your weight is less on the moon.

c)

Mass is the same everywhere in the universe but weight depends on the force of gravity.

d)

Mass and weight are the same everywhere in the universe, but they are measured in different units.

14.

The stationary background that lets us know that an object is moving is called the _____.

a)

background of motion.

b)

displacement view.

c)

reference frame

d)

internal optics

15.

Why do objects fall to the center of the Earth?

a)

Gravity only exists on Earth and so everything is pulled toward it.

b)

Because of Earth's large mass, objects are pulled ot the center of the Earth.

c)

The moon's forces push on objects making them attract to the center of Earth

d)

The planet next to Earth pushes on Earth causing objects to stick to the outside.

16.

Which of these statement is true concerning balanced forces acting on a car?

a)

Balanced forces will cause the car to slow down and stop.

b)

Balanced forces will cause no change in the car's motion.

c)

Balanced forces will cause the car to accelerate in the direction of the greater force.

d)

Balanced forces will cause the object to change direction.

17.

Which of these statement is true concerning gravity?

a)

Every object in the universe possesses gravity.

b)

The more mass an ojbect has, the more gravity it possesses.

c)

A change in gravity will cause a change in weight.

d)

All are true.

18.

What is the net force that is being applied in the picture?

a)

2 N to the left

b)

8 N to the right

c)

6 N to the right

d)

10 N to the left

19.

If the free falling objects in the data table above are dropped from the same distance, which will hit the ground first?

a)

Object A

b)

Object B

c)

Object C

d)

They all will hit the ground at the same time

20.

According to the trend in the data table below, which of the following values is most likely the speed of the object after falling for 6 seconds?

a)

0 m/s

b)

20 m/s

c)

12 m/s

d)

6 m/s

21.

Which of the following scientists are credited with the discovery of gravity?

a)

Galileo

b)

Einstein

c)

Darwin

d)

Newton

22.

What is the net force and direction of motion for the object below?

a)

5 N to the left

b)

5 N to the right

c)

0 N (no motion)

d)

55 N left

23.

By definition, an object is in motion if its _________ changes.

a)

force

b)

position

c)

relationship

d)

direction

24.

A 10 gram pencil is dropped to the ground. Assuming that the pencil is in free fall, what would be the force with which the pencil drops to the ground?

a)

100 N

b)

10 N

c)

1000 N

d)

0.1 N

25.

Which type of friction is best represented by this picture?

a)

turbulent friction

b)

static friction

c)

rolling friction

d)

sliding friction

26.

Because of the pull of gravity, when you are on the Earth as compared to the Moon,

a)

your mass is greater on Earth than on the moon.

b)

your mass is greater on the moon than on the Earth.

c)

your weight is more on the moon than on the Earth.

d)

your weight is more on the Earth than on the Moon.

27.

An object is said to have accelerated if ______.

a)

A. The object changes speed

b)

B. The object changes direction

c)

Both A & B

d)

Neither A or B

28.

A car stopped at a stop sign speeds up to 30 km/hr in 5 hours. What is the car's acceleration is km/hr2?

a)

30 kmhr230\ \frac{km}{hr^2}  

b)

6 kmhr26\ \frac{km}{hr^2}  

c)

2 kmhr22\ \frac{km}{hr^2}  

d)

3000 kmhr2 3000\ \frac{km}{hr^2\ }  

29.

Which of the following inclines would cause a marble to accelerate the fastest when rolled from the top of the ramp to the bottom?

a)

a

b)

b

c)

c

d)

d

30.

How much does a 20 gram apple weigh that is falling from a tree? (Hint: the apple is in free fall)

a)

20 N

b)

50 N

c)

200 N

d)

2000 N

31.

A small marble is dropped to the floor. Assume that as the marble falls, the only force exerted on it is the force of gravity. How do the speed and acceleration of the marble change with time?

a)

speed increases, acceleration increases

b)

speed remains constant, acceleration increases

c)

speed increases, acceleration remains constant

d)

speed remains constant, acceleration remains constant.

32.

Which term below best describes why water splashes out when a cup of water is bumped?

a)

Acceleration

b)

Gravity

c)

Inertia

d)

Velocity

33.

Which of the following line graphs represent a balanced force?

a)

A

b)

B

c)

C

d)

D

34.

The net force of an object is 0 Newtons. Which of the following statements is true of the object?

a)

The inertia of the object is 0

b)

The speed of the object is 0

c)

The velocity of the object is 0

d)

The acceleration of the object is 0

35.

Bobby (age 5) and his dad are skipping pebbles on the pond. Bobby notices that the pebbles that his dad throws go farther and faster than his. Which of Newton’s laws best explains this phenomena?

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

d)

Newton's Law of Gravity

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