A ball rolls in a horizontal direction off of a ledge. If the velocity of the ball was 11 m/s and the ball traveled 46 m from the base of the ledge, how tall is the ledge? Explain please

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?

Convection occurs when thermal energy is transferred by the movement of