Review Q #2

Front

What is net force?

Back

The net force is the overall force acting on an object when all the individual forces are combined. It determines the object's acceleration.

Front

What does Newton's Third Law state?

Back

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

Front

What happens when a swimmer pushes against the pool wall?

Back

The wall pushes back against the swimmer with the same amount of force.

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field, which increases with height and mass.

Front

What happens to potential and kinetic energy as a car moves down a slope?

Back

As the car moves down the slope, the potential energy decreases while the kinetic energy increases.

Front

What is the formula for calculating gravitational potential energy?

Back

Gravitational potential energy (PE) = mass (m) × gravity (g) × height (h).

Front

What is the difference between mass and weight?

Back

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

Front

What is friction?

Back

Friction is a force that opposes the motion of an object, caused by the contact between two surfaces.

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object has due to its motion, calculated as KE = 1/2 × mass × velocity².

Front

What is the role of gravity in motion?

Back

Gravity is a force that pulls objects toward each other, influencing their motion and causing them to accelerate toward the Earth.