Is work being done if you push a child in a wagon

A medicine ball is dropped from a height of 1 m. It strikes the ground with an energy of 50 J. What is the mass of the medicine ball?

In order for a color to be seen by a human, the light must be what?

Complete each sentence by putting a tick in the box next to the correct answer. (i) the wind is (A) a non-renewable energy source (b) a constant energy source (C) an unreliable energy source which one is the correct answer

What is the dimention of kinetic energy

2) What are the directions of the velocity and acceleration of an object in uniform circular motion?

Why is it important to exclude onlockers from a crime scene

If the current is cut in half and the resistance is increased by a factor of three, how will the power be affected? A. The power will increase to 150 percent of its previous value. B. The power will decrease to 75 percent of its previous value. C.

A barbed-wire barrier erected by the East Germans between East and West Berlin that eventually was rebuilt of concrete

A stone is dropped into a deep well and is heard to hit the water 3.41 after being dropped. Determine the depth of the well?

Four objects are situated along the y axis as follows: a 2.09-kg object is at + 2.97 m, a 2.93-kg object is at + 2.53 m, a 2.57-kg object is at the origin, and a 3.92-kg object is at - 0.496 m. Where is the center of mass of these objects?