What is the mechanical energy of a 500 kg Rollercoaster car moving with a speed of 3 m/s at the top hill that is 30 my high

A 10 kg bowling ball sits at the top of a 10 m hill and then slides down its icy hillside.

In an automobile collision, a 44-kilogram passenger moving at 15 meters per second is brought to rest by an air bag during a 0.10-second time interval. What is the magnitude of the average force exerted on the passenger during this time?

Sports injury reactions are determined by all the following except A. Perception of pain B. Effect of peak performance C. Gender D. The athletes mental fortitude

Why is thermal energy from the Sun transferred to Earth through electromagnetic waves instead of any other type of thermal energy transfer? Electromagnetic waves can carry energy through matter. Electromagnetic waves can travel through empty space.

Consider a metal single crystal oriented such that the normal to the slip plane and the slip directions are at angles of 43.1° and 47.9°, respectively, with the tensile axis. If the critical resolved shear stress is 20.

In an experiment, all participants receive a treatment but those in the control group recieves a false treatments

When the volume increased, what happened to the density?

8. Chemical weathering occurs more rapidly in what kind of climates? A. Desertlike B. Cold with high snowfall amounts C. Cool and dry D. Warm with abundant rainfall

Recoil is noticeable if we throw a heavy ball while standing on a skateboard. If instead we go through the throwing motion but hold onto the ball, without friction effects our net recoil will be A) zero. B) the same as before.

If an electromagnet is used to pick up nails and other metal objects, what happens when the current is turned off?