how long does it take a mango fruit to fall from a 20 m high tree branch at an average speed of 30 m per second
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Explanation:
Final velocity equals initial velocity plus two times acceleration times distance.
V is final velocity, just before impact.
u is initial velocity, which is zero.
a is acceleration of gravity, which is 9.81 m/s/s.
s is the distance from the branch to the ground, which is 10 m.
V^2=u^2 +2 a s
V^2= 0+ 2(9.81)(10)
V^2= 196.2 m/s
V=14 m/s= final velocity
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