Q.

A antelope moving with constant acceleration covers the distance between two points 70.0m apart in 7s. Its speed as it passes the second point is 15m/s, what is its acceleration =x7. The value of x is ____.

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answer is 10.

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Detailed Solution

v=u+ata=15u7 
S=ut12at270=7u12×(15u7)×72 
70=7u12(1057u)u=5m/s 
a=1557=107  

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