A5.0kg toolbox is raised from the ground by a rope. if the upward acceleration of the bucket is 2.5 m/s^2, find the force exerted by the rope on the toolbox. acceleration due to gravity is 9.8m/s^2.

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