Unit 4 Review

Front

At which point on the roller coaster is the kinetic energy at its maximum?

Back

C - The kinetic energy is at its maximum at the lowest point of the roller coaster due to the conversion of potential energy to kinetic energy.

Front

What is work in physics?

Back

Work is done when energy is transferred from one object to another.

Front

What is the unit for energy?

Back

Joule (J) is the standard unit for measuring energy.

Front

Calculate the power exerted by Bob if he exerts a net force of 50 N while pushing a lawn mower 150 m in 300 seconds. W=F×d, P=W/t

Back

Power = 25 Watts.

Front

Calculate the potential energy of a 10 kg object sitting on a 15.0 meter high ledge. Use PE=mgh, G=9.8 m/s².

Back

Potential Energy = 1,470 J.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object due to its motion, calculated as KE = 1/2 mv².

Front

What is potential energy?

Back

Potential energy is the stored energy of an object due to its position or state, calculated as PE = mgh.

Front

What is the formula for calculating work?

Back

Work (W) is calculated as W = F × d, where F is force and d is distance.

Front

What is the relationship between work and energy?

Back

Work is the process of transferring energy from one system to another.

Front

What is the formula for calculating power?

Back

Power (P) is calculated as P = W/t, where W is work done and t is time.