20 kg object travels 28 meter and stops. coefficient friction = 0.085 how much work was done by friction?

Which is an example of transforming potential energy to kinetic energy? Select two options.

What should you always include in a great summary? (Select all that apply) A. investigation plan B. possible errors C. predictions D. new questions

If you dropped a ball while standing on the surface of mars at what rate would it accelerate toward the ground

What are three area of science that rely on physical science

The electron gun in an old CRT television accelerates electrons between two charged parallel plates (the cathode is negative; the anode is positive) 1.2 cm apart. The potential difference between them is 25 kV.

A rocket moves away from the surface of the earth. As the distance r from the center of the planet increases, what happens to the force of gravity on the rocket?

Why am i not floating?

A person holds onto an object for 2 minutes, but doesn't move the object. Is work done on the object?

Warming in front of a fire while camping is an example of? A. Conduction B. Convection C. Radiation

In which medium would light travel the fastest? Question 21 options: a. across a room b. in a swimming pool c. through outer space d. through a railroad track