1.

Select the best answer.

Newton's _____ law states that for every action there is an equal and opposite reaction.

	second
	first
	third

2.

Select the best answer. Which of these forces is the weakest?

	weak nuclear
	gravitational
	electromagnetic
	strong nuclear

3.

Choose the best answer based on the graph.

At which segment did the car havegreatest positive acceleration?

	E-F
	D-E
	C-D
	B-C
	A-B

4.

Select the best answer. Which of these has the greater gravitational pull on an object?

	Earth
	Mars
	Mercury
	Venus
	Jupiter

5.

Select the best answer. If both teams pull on the rope with the same amount of force, what will happen?

	The rope will not move because of balanced forces.
	The rope will moveto the left because of unbalanced forces.
	The rope will move tothe right because of unbalanced forces.
	The rope will notmove because of unbalanced forces.

6.

Label the force diagram. Label "B" on the force diagram using words from below.

	friction
	applied
	gravity
	normal

7.

Select the best answer. A snail crawls 2 cm a second going northwest. This is a description of _____.

	acceleration
	speed
	velocity
	momentum

8.

Choose the correct answer for the word problem using the given formulas.

What would the weight of an object with a mass of 65 kg be in newtons if it weretraveling on the dwarf planet Pluto? Pluto has an acceleration of gravity equal to

	65.62 N
	0095 N
	105 N
	40.3 N

9.

Select the best answer. Which object will accelerate faster?

	an object that has 85 N of force applied to it
	an object that has 8.5 N of force applied to it

10.

Select the correct answer for the word problem using the given formulas.

A moped is going 20 m/s, and speeds up to 60 m/s in 10 s. What is the acceleration?

11.

Select the best answer.

A robot was made to continuously run at 20 mph. It does not change its speed at all once it reaches 20 mph. This is a description of _____ speed.

	constant
	balanced
	instantaneous
	unbalanced

12.

Select the best answer. Which requires more force to accelerate an object?

	an object with a 5-kg mass
	an object with a 5-g mass

13.

Select the best answer. Which part of this picture shows distance?

	B
	A

14.

Select the correct answer for the word problem using the given formulas.

Gina walks 3 mph for 4 hrs. How far did she walk?

	0.75 mi
	1.3 mi
	12 mi
	7 mi

15.

Select the best answer.

Newton's _____ law states that an object in motion will stay in motion, and an object at rest will stay at rest unless an unbalanced force acts on it.

	first
	third
	second

16.

Select the best answer. A snail crawls 2 cm a second. This is a description of _____.

	momentum
	velocity
	acceleration
	speed

17.

Select the best answer. What do velocity, acceleration, and momentum have in common?

	They are all vectors.
	They are scalar.
	They are three-dimensional.
	They do not have a direction.

18.

Select the best answer. In the case of all collisions, momentum is _____.

	lost
	gained
	conserved

19.

Choose the best answer based on the graph of how fast Max's dog can run.

At approximately which timedid the dog start running back to Max?

	4 s
	12 s
	6 s
	10 s

20.

Match the terms with the definitions.

	states that in order to overcome inertia, you must apply an unbalanced force to an object
	the tendency of an object to resist any change in motion
	an attractive force between any two objects with mass
	the force that opposes motion between two surfaces that touch each other
	a supportive force that surfaces exert in order to prevent solid objects from passing through one another

Choices

normal force

gravity

friction

inertia

law of inertia

21.

Select the best answer.

A van has a speed of 55 mph and slows down to 30 mph. What is the best description of what is happening?

	positive acceleration
	negative velocity
	negative acceleration
	positive velocity

22.

Label the force diagram. Label "A" from the force diagram using words from below.

	applied
	friction
	gravity
	normal

23.

Select the correct answer for the word problem using the given formulas.

What is the momentum of an object that has a mass of 89 g and a velocity of ?

24.

Select the best answer.

A snail crawls 2 cm a second and then slows down to 1 cm a second going north. This is a description of _____.

	acceleration
	velocity
	momentum

25.

Select the best answer.

The police officer clocked a car going 98 mph with her radar gun. This is a description of _____ speed.

	instantaneous
	constand
	deceleration
	acceleration

26.

Select the best answer. If a person increases the mass and velocity of a car, what will happen?

	Momentum will increase.
	Momentum will decrease.
	Momentum will be conserved.
	Momentum will be destroyed.

27.

Select the best answer. Why does it take a long time for a train to come to a complete stop?

	balanced forces
	inertia
	unbalanced forces

28.

Select the best answer.

Newton's _____ law states that an object's acceleration is directly proportional to the net force acting on the object and is inversely proportional to the object's mass.

	second
	third
	first

29.

Select the best answer. What enables a bird to fly?

	action and reaction forces
	momentum
	acceleration

30.

Select the best answer.

As distance _____, gravitational force decreases. As mass _____, gravitational force increases.

	decreases; increases
	decreases; decreases
	increases; decreases
	increases; increases

31.

Label the force diagram. Label "C" on the force diagram using words from below.

	normal
	applied
	gravity
	friction

32.

Choose the best answer based on the graph of how fast Max's dog can run.

How far did Max's dog runbefore he first stopped?

	30 m
	40 m
	20 m
	4 m

33.

Label the force diagram. Label "D" on the force diagram using words from below.

	friction
	applied
	gravity
	normal

34.

Select the best answer. Which of these cars has the greatest inertia?

	a car filled with seven large passengers
	the same car filled with three small passengers

35.

Select the best answer.

If a grape and a grapefruit are dropped at the same time and have no air resistanceor other forces acting on them, which statement would be TRUE?

	The grapefruit would hit the ground first.
	They would hit the ground at the same time.
	They would fall with an acceleration of .
	The grape would hit the ground first.

36.

Choose the best answer based on the graph.

At which segment did the car havenegative acceleration?

	A-B
	B-C
	C-D
	E-F
	D-E