8. A photographer in a helicopter ascending vertically at a constant rate of 1.2 m/s accidentally drops a camera out the window when the helicopter is 19.0 m above the ground. (a) How long will it take the camera to reach the ground?9. (b) What will its speed be just before it hits the ground?

A dolphin in an aquatic show jumps straight up out of the water at a velocity of 12.5 m/s. How high (in m) does his body rise above the water?   How long (in s) is the dolphin in the air? Neglect any effects due to his size or orientation.

4. A baseball is hit at ground level. The ball reaches its maximum height above ground level 3.0 s after being hit. Then 2.5 s after reaching its maximum height, the ball barely clears a fence that is 97.5 m from where it was hit. Assume the ground is level. (a) What maximum height above ground level is reached by the ball? (b) How high is the fence? (c) How far beyond the fence does the ball strike the ground?

1. One object is dropped from a height h = 1.0202030304040505 m (initial velocity is zero) and it hits the ground after a time t₁. A second object is launched horizontally from the same height h = 1.0202030304040505 m (as shown in the figure below) with the horizontal velocity vo = 1.0102030405 m/s, and it hits the ground after a time t2. Compute the time difference At = t₂ - t₁. (Neglect the air friction). EXPLAIN YOUR ANSWER or SHOW YOUR WORK. A numerical value is required for credit. Do NOT round or truncate any numerical value at any point in the computation, SOLVE IN SYMBOLS. 1.0102030405 m/s 1.0202030304040505 m