A 50g ball is falling down. As the ball passes a certain distance its potential energy changes for 2J. Calculate this distance. Does this distance depend on the initial velocity of the ball?

How are roller coasters designed to produce a sense that the coaster is traveling faster than it really is travelling?

If a hollow ping pong ball is filled with water, will the density of the ball change?

What substance is the genetic material of living things?

An elevator (mass 4500 kg) is to be designed so that the maximum acceleration is 0.0680 g. what is the maximum force the motor should exert on the supporting cable?

When you hold a ball above ground it has kinetic energy true or false

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