A 0.5 kg tennis ball has speed of 15m/s. what is the kinetic energy of tennis?

A small, 3 kg weight is moved from 5 m from the ground to 8 m. What is the change in potential energy?

A car speeds up from 5 m/s to 12 m/s in 20 seconds. What is the acceleration of the car? O A. 29 m/s2 O B. 0.35 m/s2 C. 2.1 m/s2 O D. 11 m/s2 O O

A young girl slides down a rope. As she slides faster and faster she tightens her grip increasing the force exerted on her by the rope. what happens when this force is equal in magnitude to her weight?

Why are solids good at transferring heat through conduction? A. The particles are close together. B. The particles do not move. C. The particles give off electromagnetic waves. D. The particles can slide past one another.

A car accelerates from rest along a straight road. as it accelerates, the magnitude of the car's momentum changes by a certain amount. by how much does the magnitude of the momentum of the earth itself change? 1.

All atoms of an element have the same?

Select the correct answer. When waves travel through water, why do the moving water particles continue to return to their starting position? A: Waves transfer matter, but not energy. B:Waves transfer both matter and energy.

Daniel has a sample of pure copper. It's mass is 89.6 grams (g) and it's volume is 10 cubic centimeters (cm3) what is the density of the sample

Why do scientists believe the universe is still expanding

What information on the periodic table is used to complete electron dot diagrams?