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Question1

A diver springs upward from a board that is 2.85 meters above the water. At an instant she contacts the water her speed is 9.35 m/s and her body makes an angle of 71.5° with respect to the horizontal surface of the water. Find out her initial velocity.

Question2

A gun shoots bullets that leave the muzzle with a speed of 278 m/s. If a bullet is to hit a target 155 m away at the level of the muzzle, gun has to be aimed at a point above the target.

How far above the aim is this point? (Overlook air resistance.)

Question3

A log is floating on a river travelling 2 m/s. while the log is 10 m from the bridge floating toward it a, person drops a stone from the edge of the bridge the stone hits the water 2m in front of the log how high is bridge?

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