A soccer ball is kicked at an angle of 16 degrees. It lands on the ground 21 meters away from it starting point. What is the initial speed of the ball?

A girl stands on a fishing pier and tosses a pebble into a pond. The pebble is thrown from a height of 2.50 m above the water surface with a velocity of 4.60 m/s at an angle of 60.0° above the horizontal. As the pebble strikes the water surface, it immediately slows down to exactly half the speed it had when it struck the water and maintains that speed while in the water. After the pebble enters the water, it moves in a straight line in the direction of the velocity it had when it struck the water. If the pond is 6.20 m deep, how much time elapses (in s) between when the pebble is thrown and when it strikes the bottom of the pond? 5.195 X

A soccer ball is kicked at a speed of 14.0 m/s at an angle of 36.0 degrees above the horizontal. The ball is in the air for 2.90 s.What is the maximum height the ball reaches?

An inflatable raft (unoccupied) floats down a river at an approximately constant speed of 3.9 m/s. A child on a bridge, 66 m above the river, sees the raft in the river below and attempts to drop a small stone onto the raft. The child releases the stone from rest. In order for the stone to hit the raft, what must be the horizontal distance between the raft and the bridge when the child releases the stone?