A 2.5-kg rock is dropped off a 32-m cliff and hits a spring, compressing it 57 cm. What is the spring constant? Round your answer to two significant figures.

Strong winds causing a vehicle to lose all control is called

roller coaster has a mass of 425 kg. It sits at the top of a hill with height of 66 m. How fast is it going when it reaches the bottom?

Which way does current always flow?

The ball of dough hits the floor and does not rebound. Describe the energy transfers taking place from when the dough is dropped to after it has hit the floor.

The greater the change in speed, the less the light wave is reflected. True or false? Explain.

How Much Potential Energy Does A 50kg block of Ice a Height of 4m Have?

In a summer storm the wind is blowing with a velocity of 8m/s north. Suddenly in 3 seconds, the winds velocity is 23m/s north. What is the winds acceleration?

How does a bicycle rider's energy of motion changes as the gain speed while riding down a hill? Options: A) It is lost. B) It increases. C) It remains the same. D) It is stored in the bicycle rider.

When is a sailboat the stand on vessel in relations to a recreational power boat?

What happens when a balloon is rubbed with a woollen cloth?