Energy that is stored is kinetic energy

Two planets have the same surface gravity, but planet b has twice the mass of planet a. if planet a has radius r, what is the radius of planet b?

A bowling ball of mass 5 kg hits a wall going 7 m/s and rebounds at a speed of 2 m/s. What was the impulse applied to the bowling ball

How are radio waves used on Earth?

How much energy is required to vaporize 234.5 g of water

What is the velocity (in m/s) of a 550 kg roller coaster cart at the bottom of the track if it started with 990,000 J of gravitational potential energy at the top of the track? Assume a frictionless surface.

You're going to open the door further by giving it a brief, hard push. first, you'll push the door at its center. then, you'll push it near the door knob. both pushes are equally hard, and last the same length of time.

In which phenomenon does Earth's magnetic field play an important part? A retaining gases around Earth to form the atmosphere B. stratifying the atmosphere into layers c. movements of tectonic plates D. spreading of the sea floor E.

Make sure that you spend extra time warming up during - O O A. spring B. cold weather O c. the afternoon O D. a heat wave

Which of these forces could speed up a baseball? A) Applied and Frictional forces B) Applied and Gravitational forces C) Frictional and Gravitational forces

When you are travelling downhill on a roller coaster, you experience a light feeling in your stomach. why?