A boy drops a ball from rest which reaches the ground in 2.1 s. Find the maximum height from where the ball is dropped to appropriate significant figures. (Given g=9.8 m/s^2)
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s = 1/2 gt^2
s = 1/2*9.8*2.1*2.1= 4.9 *2.1*2.1 = 21.6M
s = 1/2*9.8*2.1*2.1= 4.9 *2.1*2.1 = 21.6M
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