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4 votes
A ball thrown vertically upwards with an initial speed of 30m/s from the top of a cliff falls into the water 10seconds later directly below the cliff. Find

1.How high the ball went above the cliff
2.How high the cliff is ,neglecting air resistance

2 Answers

3 votes
1. KEi = PEf
(1/2)m(30)^2= m(10)h
h=45m
User Ehennum
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6 votes
1. about 15 feet
2 depending the force of the air resictance, it could be many answers
User Rohit Chaudhari
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7.9k points