8. A roller coaster's velocity at the top of a hill is 10 m/s. It reaches the bottom of the hill with a

velocity of 26 m/s. If the acceleration of the coaster is 8 m/s?, how long did it take to reach the

bottom of the hill?

An object has a mass of 250g what is the gravitational force of on the object by the earth

Which do you think would be warmer on a winter day when there is no wind a thick forest or a grassy field? explain your answer

Why did scientists agree to use one system of measurement

A 75.2 kg ice skater, moving at 7.7 m/s, crashes into a stationary skater of equal mass. After the collision, the two skaters move as a unit at 3.85 m/s. Suppose the average force a skater can experience without breaking a bone is 4824 N.

What type of wave is a mircrowave

A rigid container filled with a gas is placed in ice. What will happen to the pressure of the gas? And what will happen to the volume?

A man is sitting on a 20 m height building and his mass is 50 kg. Calculate the mechanical energy.

Which of the following correctly describes which types of waves travel through which types of mediums? A) Transverse waves travel through solids, liquids, and gases.

Niko was hiking in the mountains when he found a spring, or a place where water naturally flows out of the ground. Where did the water in the spring come from? A. It is water that was squeezed out of an igneous rock when the rock changed. B.

Is mount st. Helen still active today