A ball is thrown upwards with speed 30 m/s. Assume air-resistance to be producing acceleration 0.006 v 2 opposite to motion in addition to gravity (g = 10 m/s 2 ). v is the instantaneous speed.
i.e. for upward motion: a = – g – 0.006 v 2
and for downward motion: a = – g + 0.006 v 2
Find,
Text Solution
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Sol. a = – (g + kv 2 ) 
= – (g + kv 2 )
36 m 24 m/s
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