Laws of Motion

Which of the following statement is TRUE when a ball rolls on the floor then eventually stops?

• The ball stopped because its force was already used up.

• The ball stopped because a balanced force was acting on it.

• The ball stopped because an unbalanced force was acting on it.

• The force acting on the ball was continuously decreasing.

A steel ball is attached to a string and swung in a circular path in a horizontal plane as illustrated in the figure on the right. At the point P indicated in the figure, the string suddenly breaks near the ball. If these events are observed from directly above as in the figure, which path would the ball most closely follow after the string breaks?

• Path A

• Path B

• Path C

• Path D

• Path E

What is inertia?

• The basis for Newton’s First Law of Motion

• Defined as the tendency for an object to remain at rest or in uniform motion.

• A term meaning resistant to change and is dependent on the mass of an object

• All of the above

In Newton’s Second Law of Motion, how are mass and acceleration related?

• inversely proportional

• directly proportional

• power relationship

• inverse direct relationship

A man kicks a rock. According to Newton’s Third Law , how much force does the rock exert on the man?

• greater than the force exerted by the man

• less than the force exerted by the man

• equal to the force exerted by the man

• cannot be determined

What is the Newton’s Law of Motion evident in the given situation?

Coin staying at rest on top of the cardboard as it is slowly pulled.

• Law of Acceleration

• Law of Inertia

• Law of Interaction

• Law of Motion

What is the Newton’s Law of Motion evident in the given situation?

It hurts when you slap someone else’s face.

• Law of Acceleration

• Law of Inertia

• Law of Interaction

• Law of Motion

What is the Newton’s Law of Motion evident in the given situation?

A car still moves for a short period even after the brakes have been applied.

• Law of Acceleration

• Law of Inertia

• Law of Interaction

• Law of Motion

What is the Newton’s Law of Motion evident in the given situation?

Cars are used for racing purposes than trucks.

• Law of Acceleration

• Law of Inertia

• Law of Interaction

• Law of Motion

What is the Newton’s Law of Motion evident in the given situation?

Wearing seatbelts and headrests for safety purpose.

• Law of Acceleration

• Law of Inertia

• Law of Interaction

• Law of Motion