A 62kg physics student ran up the stairs in order to get to class on time. The vertical displacement from the ground to the top of the stairs was 5.3 meters and the student ascended the stairs in 4.2 seconds. What was the physics student's power output in watts (W)? (round answer to nearest 10th place) * 4 points

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n

The heliocentric and the geocentric models of the solar system included these central principles

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.