Newton's Laws

According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will

• remain in motion.
• eventually come to a stop.
• change its momentum.
• accelerate.

A push or a pull is called

• Gravity

• Force

• Acceleration

• Deceleration

Which is the definition of Newton's 1st Law?

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

• An object at rest will stay at rest, an object in motion will stay in motion, unless an unbalanced force acts upon it to change this.

• Acceleration is proportional to the force acting and occurs in the direction in which the force is applied.

Which statement describes Newton's 2nd Law?

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

• Acceleration depends on two variables, the mass of the object and the amount of force applied.

• Greater mass = greater inertia

Which statement defines Newton's 3rd Law?

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

• Acceleration depends on two variables, the mass of the object and the amount of force.

• A body at rest will remain at rest and a body in motion will remain in motion until an external force acts upon it to change the state of motion.

The reluctance of a body to change its state of motion...

• gravity

• inertia

• force

• friction

Newton's first law states that an object will travel at a constant speed and in ___________, unless an unbalanced force acts on it.

• in a circle

• a wave like manner

• the same direction

• a bus

Suppose an astronaut floating in space throws a rock. What will happen to the rock?

• It will continue to move in the same direction, speeding up as it moves.

• It will continue to move at the same speed and in the same direction until it is acted upon by another force.

• It will move at the same speed but change direction as it moves.

Two students are in a baseball game. The first student hits a ball very hard and it has a greater acceleration than the second student who bunts the ball lightly. Which law is this an example of?

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• None of them

The swimmer moves her hand down and to the left and her body goes forward to the right. Which law does this describe?

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law