A child does 350J of work while pulling a box from the ground up to his tree house with a rope. The tree house is 5.2 m above the ground. What is the mass of the box? A) 4.1 kg B) 6.9 kg C) 6.2 kg D) 5.2 kg

A measure of the average kinetic energy of the individual particles in an object is called

Which of these is the best example of an elastic collision? A rubber ball is dropped from 1.2m and bounces back up to a height of 0.8m.

Is a gallon of gasoline stored energy

Use the concept of feilds to describe how forces can act from a distance

Cody's car accelerates from 0m/s to 45 m/s northward in 15 seconds. What is the acceleration of the car?

A bus travels 20 KM and 30 minutes what is average speed of the bus

What is the total number of atoms in the following formula? CaBr2

A lifeguard on a beach observes that waves have a speed of 7 m/s and a distance of 4.6m between wave crests. what is the period of the wave motion?

4. A car of mass 2000 kg is traveling at 45 m/s when the driver spots a policeman anead. i ne univer apprivo the brakes lightly for 3.0 seconds until he slows down below the speed limit. If the average force applied by the brakes was 1.

When does a scientist create the conclusion?