Question 1

A car traveling at 80 km/h crashes into a brick wall and comes to a sudden stop. According to Newton's First Law, what happens to the driver if they are not wearing a seatbelt?

Accepted Answer

The driver continues moving forward at 80 km/h due to inertia.

Question 2

Which of the following best describes inertia?

Accepted Answer

The tendency of an object to resist changes in its motion.

Question 3

A bowling ball and a baseball are both at rest. Which has more inertia and why?

Accepted Answer

The bowling ball, because it has more mass.

Question 4

A book slides across a table and eventually stops. What force is primarily responsible for stopping the book?

Accepted Answer

Friction

Question 5

Two teams are playing tug of war, each pulling with equal force in opposite directions. What is the net force on the rope and what happens to its motion?

Accepted Answer

The net force is zero, and the rope remains stationary.

Question 6

A rocket experiences an upward force of $$12,000\ \mathrm{N}$$ and accelerates at $$6\ \mathrm{m/s^2$}. $$What is the mass of the rocket?

Accepted Answer

$$2,000\ \mathrm{kg}$$

Question 7

A cart is accelerated at $$4\ \mathrm{m/s^2$} by a $$force of $$80\ \mathrm{N}. $$What is the mass of the cart?

Accepted Answer

$$20\ \mathrm{kg}$$

Question 8

Which equation correctly represents Newton's Second Law of Motion?

Accepted Answer

$$F = m 	imes a$$

Question 9

A motorcycle and rider with a combined mass of $$80\ \mathrm{kg}$$ accelerate at $$1.5\ \mathrm{m/s^2$}. $$What is the force applied by the rider?

Accepted Answer

$$120\ \mathrm{N}$$

Question 10

A mosquito collides head-on with a truck. According to Newton's Third Law, which statement is true about the forces during the collision?

Accepted Answer

The mosquito exerts the same force on the truck as the truck exerts on the mosquito.

Question 11

Which of the following is NOT a characteristic of an action/reaction force pair according to Newton's Third Law?

Accepted Answer

They act on the same object.

Question 12

A person pushes backward against the ground while walking. What is the reaction force according to Newton's Third Law?

Accepted Answer

The ground pushes forward on the person.

Question 13

If a constant force causes an object to accelerate at $$4\ \mathrm{m/s^2$}$$, what will be the acceleration if the mass of the object is doubled?

Accepted Answer

$$2\ \mathrm{m/s^2$}$$

Question 14

A soccer ball is at rest on the field. What must happen for the ball to begin moving?

Accepted Answer

An unbalanced force must act on the ball.

Question 15

A swan lands on an icy lake and slides to a stop. What is the direction of the acceleration as the swan slows down?

Accepted Answer

To the left.

Question 16

Which of the following scenarios best illustrates Newton's First Law?

Accepted Answer

A book remaining at rest on a table until pushed.

Question 17

If the net force acting on an object is zero, what can be said about the object's motion?

Accepted Answer

It will move at a constant velocity.

Question 18

A force of $$100\ \mathrm{N} is $$applied to an object with a mass of $$20\ \mathrm{kg}. $$What is the acceleration of the object?

Accepted Answer

$$5\ \mathrm{m/s^2$}$$

Question 19

Which of the following statements about Newton's Laws is correct?

Accepted Answer

Newton's Second Law relates force, mass, and acceleration.

Newton’s Laws of Motion: Principles and Applications

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