DCP#2 Review

Front

What is elastic potential energy?

Back

Elastic potential energy is the energy stored by an object that can stretch or shrink, such as a spring or rubber band.

Front

What is Newton's 1st law of motion?

Back

Newton's 1st law, also known as the Law of Inertia, states that an object at rest will stay at rest, and an object in motion will stay in motion at a constant velocity unless acted upon by a net external force.

Front

How does the Law of Inertia relate to seat belt safety?

Back

The Law of Inertia explains that if a car suddenly stops, the occupants will continue moving forward at the same speed unless restrained by a seat belt, increasing the risk of injury.

Front

What are the energy transformations in a hand generator?

Back

In a hand generator, the energy transformations are mechanical energy (from turning the handle) to electrical energy (producing current) to light energy (making the bulb glow).

Front

What is kinetic energy?

Back

Kinetic energy is the energy due to motion. It depends on the mass of the object and its velocity.

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the energy stored in an object as it is raised to a height against the force of gravity.

Front

What is Newton's 2nd law of motion?

Back

Newton's 2nd law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F=ma).

Front

What is Newton's 3rd law of motion?

Back

Newton's 3rd law states that for every action, there is an equal and opposite reaction.

Front

What is the difference between potential energy and kinetic energy?

Back

Potential energy is stored energy based on an object's position, while kinetic energy is the energy of an object in motion.

Front

What is the formula for calculating kinetic energy?

Back

The formula for kinetic energy (KE) is KE = 1/2 mv², where m is mass and v is velocity.