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Two ball throw with initial velocity 40m/s and 60m/s find thae ratio of thaleir distance in last second?

Two ball throw with initial velocity 40m/s and 60m/s find thae ratio of thaleir distance in last second?

Grade:11

1 Answers

Arun
25750 Points
6 years ago
 
Since the distance travelled in the last second of upward journey = distance travelled in first second of downward journey(the height-time graph is symetric about the highest point)
 
For 1st ball
s = ut + ½ at2
= 0 + 0.5 * 9.8 * 1
=4.9m
 
For 2nd ball
S = 0 + 0.5* 9.8*1
= 4.9 m
Hence ratio = 1

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