A 45 kg boy is riding a 15 kg bicycle with a speed of 8.0 m/s. What is the combined kinetic energy of the boy and the bicycle?

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

As a pendulum bob swings back and forth several times, the maximum height it reaches becomes less and less. this is because more and more of the pendulum bob's energy is being transformed into a. heat energy b. kinetic energy c. potential energy d. kinetic energy and potential energy

Acar travels in reverse. it covers 150 meters in 12 seconds what is the velocity of the car what is the speed of the car