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ICSE Class 9 Answered

A ball is gently dropped from a height of 15 m. If its velocity increases uniformly at the rate of 10 M per second square velocity with which it will strike the ground is.
Asked by Kanwaranita10 | 07 Apr, 2018, 12:03: PM
answered-by-expert Expert Answer
we need to use the formula v2 = u2+2as;
 
u = 0; a = 10 m/s2; s = 15 m;
 
v2 = 2×10×15 = 300 m;  v = 17.32 m/s
Answered by Thiyagarajan K | 07 Apr, 2018, 06:21: PM
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