In which of these situations does a roller coaster have the most kinetic energy?

A. climbing up the first hill

B. at the top of the first hill

C. half-way down the first hill

D. at the bottom of the first hill

List three ways that electromagnetic radiation is used to improve our everyday lives.

When the shadow of the moon appears on earths surface what is occuring?

Cory said his science textbook down on the roof of his car as he was getting in, and he forgot it there. As he was driving at 30 mph, his car suddenly crashed and very quickly came to a stop.

Explain why guitar strings of the same length have different pitches.

You are a crewman on a pirate ship. You are in a battle with the Royal Navy of England. You have loaded your cannon, which is not secured to the floor, and now you stand directly behind the cannon as you light the fuse.

Why is it important for engineers to design bumper cars safely

What must her minimum speed be just as she leaves the top of the cliff so that she will miss the ledge at the bottom, which is 1.75 m wide and 9.00 m below the top of the cliff?

Which statement describes how light behaves when it strikes a translucent material? A. Light is scattered. B. Light is transmitted. C. Light is reflected. D. Light is absorbed.

A certain gas is present in a 15.0 l cylinder at 2.0 atm pressure. if the pressure is increased to 4.0 atm the volume of the gas decreases to 7.5 l.

Choose all the answers that apply. To qualify as a planet, a celestial object must: have an irregular shape revolve around the sun orbit in a clear area have enough gravity to have a spherical shape have a satellite