Unit 3 - Energy Review

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion, calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

Front

How does speed affect kinetic energy?

Back

The faster an object moves, the more kinetic energy it has.

Front

What is the equation for change in thermal energy?

Back

Q = mc∆t, where Q is the change in thermal energy, m is mass, c is specific heat capacity, and ∆t is the change in temperature.

Front

What type of energy conversion occurs in photosynthesis?

Back

Radiant energy (light) is converted into chemical energy (glucose) during photosynthesis.

Front

How is power defined in physics?

Back

Power is the rate at which work is done or energy is transferred, calculated as Power = Work/Time.

Front

What is the formula to calculate power?

Back

Power (P) = Force (F) x Distance (d) / Time (t).

Front

What is the unit of energy?

Back

The unit of energy is the Joule (J).

Front

What is the formula for calculating kinetic energy?

Back

Kinetic Energy (KE) = 1/2 mv², where m is mass and v is velocity.

Front

How do you calculate the work done by a force?

Back

Work (W) = Force (F) x Distance (d) in the direction of the force.

Front

What is the relationship between mass and kinetic energy?

Back

Kinetic energy is directly proportional to mass; as mass increases, kinetic energy increases if velocity remains constant.