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pentagon [3]
3 years ago
9

A ball is projected at an angle of elevation of 60 ° with an initial velocity of 120m/s.calculate

Physics
1 answer:
Mrac [35]3 years ago
3 0

Explanation:

It is given that,

The angle of projection is 60 degrees

Initial velocity of the ball is 120 m/s

We need to find the time taken to get to the maximum height and the time of flight.

Time taken to reach the maximum height is given by :

T=\dfrac{u^2\sin^2\theta}{2g}

g is acceleration due to gravity

T=\dfrac{(120)^2\times \sin^2(60)}{2\times 10}\\\\T=540\ s

(ii) Time of flight,

t=\dfrac{2u\sin\theta}{g}

So,

t=\dfrac{2\times 120\times \sin(60)}{10}\\\\t=20.78\ s

Hence, this is the required solution.

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The answer to your question is va = 8 cm/s, vb = 12.5 cm/s, a = 9 cm/s²

Explanation:

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