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?

Energy of an object due to its motion

An example of a single displacement reaction is

What is interfacial polarisation ... ?

A person weighing 800 newtons travels to another planet with twice the mass and twice the radius of earth. what is the person's weight on the new plant?

As a blacksmith heats a piece of iron, the iron glows red, then yellow, then white. The iron provides a demonstration of which phenomenon? A. Emission spectra B. Quantum mechanics C. Photoelectric effect D. Blackbody radiation

While playing with her 5 year old cousin, a Physics 135 student pushed him forward on his scooter. She pushes with a force of 50 Newtons for 3.5 seconds. If the boy and the scooter together have a mass of 30 kg, what is their final velocity? a. 2.

3. A 120.0 V generator supplies 3.0 kw of power. How much current ca the generator deliver?

An apple drops from a tree and hits the ground in 1.5s what is its speed just before it hits the ground?

Sound travels slow in cold air. Why does the speed of sound depend on air temperature?

A tow truck pulls a 500 kg car so that the car accelerates 2 m/s2. What is the net force on the car? 250 N 498 N 1000 N 502 N