Help please!!! A large rock has a mass of 1,000 kg and is sitting at rest on a frictionless surface. If a bowling ball with a mass of 5 Kg is placed next to the rock, so that the distance between their centers is 1m, what would the acceleration of the bowling ball be? Please identify the action / reaction forces present.

Aplayground slide is 8.80 ft long and makes an angle of 25.0° with the horizontal. a 63.0-kg child, initially at the top, slides all the way down to the bottom of the slide. (a) choosing the bottom of the slide as the reference configuration, what is the system's potential energy when the child is at the top and at the bottom of the slide? what is the change in potential energy as the child slides from the top to the bottom of the slide? (include the sign of the value in your answer.)