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Physics Work,Power & Energy Level: High School

Conservation Of Energy

A mass m is released from a height h above the ground , It is given an initial horizontal velocity of magnitude v0 . What is the speed of the mass when it hits the ground ?

1) v = square root (2gh)

2) Undetermined , since we don’t know the angle at which the mass hits the ground.

3) v = square root (v0 squared + 2gh)

4) v = square root(gh/2)

5) v = square root ((v0 squared/2)+gh)

6) v = square root ((v0 squared/2)+9gh/2)

7) v = square root (v0 squared + (gh/2))

8) v= square root (gh)

9) v = square root (v0 squared + gh)