Driving at 75m/s, you hit the brakes on your new car, accelerating at a rate of -20m/s. how long will it take the car to come to rest?

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Acombination reaction is when two or more combine to form one product. a decomposition reaction is when a substance breaks down into two or more simpler substances in a chemical reaction.

1. jay fills a wagon with sand (about 20 kg) and pulls it with a rope 30 m along the beach. he holds the rope 25° above the horizontal. the rope exerts a 20-n tension force on the wagon. how much work does the rope do on the wagon?