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A ball is thrown vertically upwardswith …

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A ball is thrown vertically upwardswith a velocity of 49m/s calculate

Posted by Simran Kaur 4 years ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years ago

Given parameters

Initial velocity of the ball (u) = 49m/s.

The velocity of the ball at maximum height (v) = 0.

g = 9.8m/s²

Let us considered the time taken is t to reach the maximum height H.

Consider a formula,

2gH = v² – u²

2 × (- 9.8) × H = 0 – (49)²

– 19.6 H = – 2401

H = 122.5 m

Now consider a formula,

v = u + g × t

0 = 49 + (- 9.8) × t

– 49 = – 9.8t

t = 5 sec

(1) The maximum height to ball rises = 122.5 m

(2) The total time ball takes to return to the surface of the earth = 5 + 5 = 10 sec.

0Thank You

ANSWER

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