Force and Motion Unit Exam

Front

What is Newton's 2nd Law of Motion?

Back

Newton's 2nd Law states that the acceleration of an object depends on the net force acting on it and the object's mass. It can be expressed with the formula: F = ma (Force = mass x acceleration).

Front

What is the action-reaction principle in Newton's 3rd Law?

Back

Newton's 3rd Law states that for every action, there is an equal and opposite reaction. This means that forces always occur in pairs.

Front

What happens to the velocity of an object thrown upwards at its highest point?

Back

The velocity of the object decreases to zero at the highest point before it starts to fall back down.

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity. It is a vector quantity, meaning it has both magnitude and direction.

Front

What is an elastic collision?

Back

An elastic collision is a type of collision where both momentum and kinetic energy are conserved. Objects bounce off each other without losing energy.

Front

What is an inelastic collision?

Back

An inelastic collision is a type of collision where momentum is conserved, but kinetic energy is not. The objects may stick together after the collision.

Front

What is the formula for calculating force?

Back

The formula for calculating force is F = ma, where F is force, m is mass, and a is acceleration.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, measured in kilograms, while weight is the force exerted by gravity on that mass, measured in newtons.

Front

What is air resistance?

Back

Air resistance is a type of friction that acts against the motion of an object moving through the air, slowing it down.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It can be caused by a change in speed or direction.