How is the acceleration of a moving object determined?

A 20 g bullet is fired horizontally with a velocity of 250 m/s from a 1.5 kg rifle. If the rifle was held loosely, what would be the recoil velocity?

3000 J of work are done by an elevator on a man lifting him to a height of 2.5 m in 0.4 seconds ? how much energy has the man gained in being lifted?

Chewy travels an average of 22 mph, how many hours does it take him to cover a 110 mike course?

Is the star with the longest total lifetime Also the farthest from earth? Explain.

The distance between starts is usually measured in A. Light-years B. Kilometers C. Astronomical units D. Miles Physical properties used to measure stars include A. Mass B. Brightness C. Size D. All of the above An H-R diagram A.

How is volume calculated directly and indirectly

Measurements of the earth's magnetic field have been recorded since?

What are some things cyclists do to reduce friction?

A person with his ear to the ground, sees a huge stone strikethe concrete pavement. A moment later two sounds are heard from theimpact: one travels n the air and the other in the concrete, andthey are 2.2 s apart.

An athlete on a sled is moving with a speed of 3.0 m/s across a pond covered with ice. If the total mass of the sled-athlete system is 95.0 kg, what magnitude of the average force is required to bring the sled to rest in 15.0 s