1. In Newton's cannonball experiment, if the velocity is larger than the orbital velocity the Cannon ball will
1. stay in orbit
2. fall to the earth
3. escape the earth
4. none of the above

Which explanation describes the forces involved for a person to walk down the sidewalk? a. the person's feet push backward on the sidewalk; the sidewalk pushes backward on the person. b. the person's feet push forward on the sidewalk; the sidewalk does not push on the person. c. the person's feet push backward on the sidewalk; the sidewalk pushes forward on the person. d. the person's feet push forward on the sidewalk; the sidewalk pushes forward on the person.

How is the ideal mechanical advantage of a wheel and axle calculated?

Agust of wind pushes a beach ball with a force of 9 newtons.the ball rolls 10 meters in 3 seconds. what is the power of the wind?