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A stone is theown in a …

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A stone is theown in a vertically upwards direction with a velocity of 5m/s. If tje acceleration of the stone during its motion is 10m/s in the downward direction, what will be the height attained by the stone and how much time will it take to reach there?

Posted by Aparna Singh 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years, 4 months ago

To find the height attained,
v² = u² + 2as
s = Height attained = (v² - u²)/2a = (0 - 25)/(2 x -10) = 1.25 .
a is negative since it's direction is opposite to the direction of motion.
t = (v - u)/a = -5/-10 = 0.5 s.

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