A train is moving at 35 m/s to the east. it speeds up to 42 m/s east over the course of 40 seconds. what was trains acceleration

Why is coal considered a nonrenewable resource? Check all that apply. 1. Coal is burned to generate electricity. 2. Coal power plants give off large quantities of smoke and ash. 3. Coal forms so slowly that we could use up the supply that exists now.

What does mechanical wave mean?

How is the musician shown changing the instrument to play different musical notes? A.) changing the velocity of the sound wave B.) changing the resonant frequency of the standing wave C.) changing the amplitude of the sound wave D.

A 0.157 kg ball is thrown straight up from 2.33 m above the ground. Its initial vertical speed is 11.60 m/s. A short time later, it hits the ground. Calculate the total work done by the force of gravity during that time.

Which situation is impossible for a moving object at a given moment? A. The object has zero velocity but non-zero acceleration. B. The object has constant non-zero velocity and changing acceleration. C.

What happens if you don't wear your school uniform?

Velocity is the rate at which an object moves in a certain direction. what would cause a change in velocity?

The position of an object is given by x = at3 - bt2 + ct, where a = 4.1 m/s3, b = 2.2 m/s2, c = 1.7 m/s, and x and t are in SI units. What is the instantaneous acceleration of the object when t = 4.1 s?

A 0.25 kg baseball is in contact with a bat for 0.0075 s and exerts a force of 18,500 N. What impulse is delivered to the ball?

What is the American psychology Association ethical principle of psychology and code of conduct based upon