Newton's Laws of Motion Quiz

Which of the following best explains why a ball thrown in space will continue to move in a straight line at constant speed?

• There is no gravity in space.

• There is no air resistance in space.

• There are no external forces acting on the ball.

• The ball has a high mass.

Which of the following best describes Newton's First Law of Motion?

• An object will remain at rest or move at a constant velocity unless acted upon by an external force.

• The acceleration of an object depends on the mass of the object and the amount of force applied.

• For every action, there is an equal and opposite reaction.

• The force of gravity acts between all objects in the universe.

Two cars collide head-on. Car A has a mass of 1000 kg and Car B has a mass of 1500 kg. If Car A exerts a force of 3000 N on Car B, what force does Car B exert on Car A?

• 1500 N

• 3000 N

• 4500 N

• 6000 N

Which of the following is an example of an object experiencing balanced forces?

• A car accelerating on a highway.

• A book sliding off a table.

• A satellite orbiting Earth.

• A picture hanging on a wall.

If a 5 kg object is subjected to a net force of 20 N, what is its acceleration?

• 2 m/s²

• 4 m/s²

• 5 m/s²

• 10 m/s²

A model car is placed on a table and remains at rest. What can be inferred about the forces acting on the car?

• There are no forces acting on the car.

• The forces acting on the car are balanced.

• The car is experiencing a net force.

• The car is accelerating.

A 10 kg object is moving with a constant velocity. What can be said about the net force acting on the object?

• The net force is 10 N.

• The net force is 0 N.

• The net force is 100 N.

• The net force is 50 N.

A 20 kg object is moving with a velocity of 5 m/s. If no external forces act on it, what will be its velocity after 10 seconds?

• 0 m/s

• 5 m/s

• 10 m/s

• 20 m/s

Which of the following best describes the relationship between mass and acceleration according to Newton's Second Law?

• As mass increases, acceleration increases.

• As mass increases, acceleration decreases.

• Mass and acceleration are not related.

• Mass and acceleration are directly proportional.

Which of the following statements is true according to Newton's Second Law of Motion?

• The acceleration of an object is inversely proportional to the net force acting on it.

• The acceleration of an object is directly proportional to the net force acting on it.

• The acceleration of an object is inversely proportional to its mass.

• The acceleration of an object is directly proportional to its mass.