What is the ke of ball as IT hits the water, and what is it's final - ProProfs Discuss
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What is the KE of ball as it hits the water, and what is it's final velocity as it hits the water A cannon fires a 1kg cannonball with a velocity of 100m/s at 60 degrees to the horizontal and from a cliff which is 20m above sea leve. By taking the changes in PE and KE?



A. 50 m/s
B. 86.6 m/s
C. 100.0 m/s
D. 101.9 m/s
E. 107.7 m/s

This question is part of 9.1 Projectile Motion
Asked by Gboulton, Last updated: Aug 13, 2019

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1 Answer

John Smith

John Smith

Answered on Jan 23, 2017

101.9 m/s

Calculate the change in PE for the 1kg to fall 20m. Then add this PE lost to the original KE of the ball. Then find v.
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