Sarah is sitting at the top of the slide in the school's playground. which of the following changes will increase sarah's kinetic energy? aan additional child is added to the top of the slide. bsarah is pushed and moves down the slide. csarah climbs down the ladder and off the slide. dthe ladder is moved to the other side of the yard.

Explain earth's motion, using the terms "precession" and "rotation" in your answer.

The man of mass m1 and the woman of mass m2 are standing on opposite ends of the platform of mass m0 which moves with negligible friction and is initially at rest with s = 0. the man and woman begin to approach each other. derive an expression for the displacement s of the platform when the two meet in terms of the displacement x1 of the man relative to the platform.

14. a body is projected with velocity vi from a. at the same time another body is projectedvertically upwards from point b withvelocity v2 lies vertically below the highestpoint. both the bodies collide thenv2÷v1is