A 0.26-kg rock is thrown vertically upward from the top of a cliff that is 32 m high. when it hits the ground at the base of the cliff, the rock has a speed of 30 m/s.

True or False: The force needed to change motion of an object rolling over a surface is less than that of an object sliding on a surface.

The center on a high school basketball team wants to increase the maximum height of his jump. What statement correctly describes how he could achieve this goal?

A planet has a mass of about 6.4 x 1023 kg, and its moon has a mass of about 9.6 x 1015 kg. if the magnitude of the gravitational force between the two bodies is 4.6 x 1015 n, how far apart are the planet and its moon? a. 9.4 x 106 c. 4.6 x 109 b. 2.

Calculate the gravitational potential energy of a 1200 kg car at the top of a hill that is 42 m high.

Did changing the angle of the incline affect the following parameters? 1 final velocity of ball 2 work 3 initial potential energy 4 final kinetic energy

How does a stars life begin?

Bart stole a watermelon and ran 5,000 feet from the cops and they chase lasted 0.1 hours how fast was Bart running in miles per hour

suppose you had two small boxes, each containing 1.0 g of protons. (a) If one were placed on the moon by an astronaut and the other were left on the earth, and if they were connected by a very light (and very long!

In a car changes its philosophy from 32 km/hour to54 km/hour in 8.0 seconds, what is its acceleration?

A car traveling at a rate of 30 ft/sec is approaching an intersection. When the car is 120 ft from the intersection, a truck traveling at a rate of 40 ft/sec crosses the intersection.