Question

A ball is projected from the ground into the air. At a height of 15 m, its velocity is observed to be = 7i+10) in m/s. The maximum height the ball will
rise is (g = 10m/s2​

Answer 1

Answer:

Hi I will answer you

Explanation:

At height h=9.1m

v

=7.6

i

^

+6.1

j

^

v

y

=6.1m/s

Now, v

y

2

−u

y

2

=2ah

(6.1)

2

−u

y

2

=−2×10×9.1

u

y

2

=(6.1)

2

+182

=219.21m

2

/s

2

Maximum height, H=

2g

u

y

2

=

2×10

219.21

=10.96m

H=11m