Question 1

According to Newton's First Law of Motion, what will happen to an object if the net force acting on it is zero?

Accepted Answer

The object will continue moving at a constant velocity or remain at rest.

Question 2

A skier is being pulled at a constant speed by a rope attached to a speedboat. If the skier's speed is constant, which of the following statements is true about the forces acting on the skier?

Accepted Answer

The force of the rope is equal to the frictional force of the water.

Question 3

Which of the following best describes equilibrium for an object according to Newton's First Law?

Accepted Answer

The sum of all forces acting on the object is zero.

Question 4

A cart is being pulled to the right with a force of $$10\ \mathrm{N}$$ and to the left with a force of $$10\ \mathrm{N}. $$What is the acceleration of the cart?

Accepted Answer

$$0\ \mathrm{m/s^2$}$$

Question 5

A ball is rolling on a smooth, frictionless surface. According to Newton's First Law, what will happen to the ball?

Accepted Answer

It will continue rolling at a constant velocity.

Question 6

A car is moving at a constant velocity on a straight road. Which of the following must be true?

Accepted Answer

The net force acting on the car is zero.

Question 7

If a net force acts on an object, what will happen to the object's velocity?

Accepted Answer

The object's velocity will change (it will accelerate).

Question 8

A box is at rest on a horizontal surface. If the forces acting on the box are balanced, which of the following is true?

Accepted Answer

The box will remain at rest.

Question 9

A person pushes a crate across a floor at a constant speed. Which statement is correct about the forces acting on the crate?

Accepted Answer

The applied force is equal to the frictional force.

Question 10

A ball is thrown straight up in the air. At the highest point, which of the following is true about the forces acting on the ball?

Accepted Answer

The only force acting is gravity.

Question 11

A hockey puck slides across ice at a constant velocity. What can you conclude about the net force acting on the puck?

Accepted Answer

The net force is zero.

Question 12

A car is initially at rest. A constant force is applied, and the car accelerates. Which law explains this behavior?

Accepted Answer

Newton's Second Law

Question 13

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

Accepted Answer

A book remains at rest on a table until someone pushes it.

Question 14

A train moves at a constant speed on a straight, level track. What is the net force acting on the train?

Accepted Answer

The net force is zero.

Question 15

A ball is rolling down a ramp and speeding up. Which of the following is true?

Accepted Answer

The net force on the ball is directed down the ramp.

Question 16

A person stands in an elevator that is moving upward at a constant speed. What is the net force acting on the person?

Accepted Answer

The net force is zero.

Question 17

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

Accepted Answer

A net force must be applied to the ball.

Question 18

A block is pulled across a rough surface at a constant velocity. Which of the following is true about the forces acting on the block?

Accepted Answer

The pulling force is equal to the frictional force.

Question 19

A ball is moving in a straight line at a constant speed. Which of the following statements is correct?

Accepted Answer

There is no net force acting on the ball.

Question 20

A box is sliding across a floor and comes to a stop. Which statement best explains why the box stops?

Accepted Answer

A net force (friction) acts opposite to the motion, causing the box to decelerate.

Newton's First Law of Motion and Equilibrium: Study Notes & Practice Problems

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