Question

1.A ball is thrown vertically upwards with an initial velocity of 49m/s. Calculate: (i) the maximum height attained, (ii) the time taken by the ball before it reaches the ground again. ​

Answer 1

Explanation:

Correct option is

A

(i) 122.5 m, (ii) 10 s

(i)

v

2

=u

2

+2as

0=49

2

−2(9.8)(s)

s=122.5 m/s

(ii)

v=u+at

0=49−9.8t

t=5 s

total time=10 s

Answer 2

• Kindly refer the attachment
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