# physics.

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Part 1:
A ball is thrown horizontally from the top of a building 28.6 m high. The ball strikes the ground at a point 80.3 m from the base of the building.

The acceleration of gravity is 9.8 m/s^2. Find the time the ball is in motion. Answer in units of s.

Part 2:
Find the initial velocity of the ball. Answer in units of m/s.

Part 3:
Find the x componet of its velocity just before it strikes the ground. Answer in units of m/s.

Part 4:
Find the y componet of its velocity just before it strikes the ground. Answer in units of m/s.

• physics. -

Sound with a frequency of 261.6Hz travels through water at a speed of 1435m/s.

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