A small rock is thrown vertically upward with a speed of 22.0 m/s from the edge of the roof of a 30.0-m-tall building. The rock doesn't hit the building on its way back down and lands on the street below. Ignore air resistance. What is the velocity of the rock just before it hits the street? Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: Answer units A tennis ball on Mars, where the acceleration due to gravity is 0.379 g and air resistance is negligible, is hit directly upward and returns to the same level 8.5 s later. How fast was it moving just after it was hit? Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: A small rock is thrown vertically upward with a speed of 22.0 m/s from the edge of the roof of a 30.0-m-tall building. The rock doesn't hit the building on its way back down and lands on the street below. Ignore air resistance. How much time elapses from when the rock is thrown until it hits the street? Note: Your answer is assumed to be reduced to the highest power possible. Your Answer:
