A ball falls from a building and covers 5m in 10s. What is the acceleration?
(a) 0.1 m/s^2
(b) 0.2 m/s^2
(c) 9.81 m/s^2
(d) 10 m/s^2
I got this question in unit test.
My enquiry is from Motion in a Straight Line topic in chapter Motion in a Straight Line of Physics – Class 11
Select the correct answer from above options
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The best I can explain: Assuming the ball falls with zero initial velocity, then according to the second equation of motion, s = ut + (1/2)at^2 = (1/2)at^2. When we put t = 10s, we get a = 0.1 m/s^2.
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