A ball is thrown vertically upward with an initial velocity of 150 m s -1 . The ratio of velocity after 3 s and 5 s is 
. The value of x is_____. {take, g= 10ms -2 }
Text Solution
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The formula to calculate the velocity of the ball after 3 s is given by
v 3 = u-3g ...
The formula to calculate the velocity of the ball after 5 s is given by
v 5 = u-5g ...
Divide equation by equation to obtain the required ratio.
Substitute the values of the known parameters into equation to calculate the required ratio.
Comparing the above equation with the given expression, it can be written that x = 5
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