Question

traced by a point on
oohtheby
Q. 5) A ball is thrown up in the air and reaches back on the ground at a distance of 9 m from the initial
point and ball travels maximum height of S.5m. Draw the curve traced by the ball​

Answer 1

Answer:

Given, s=20m,v=0m/sec,a=9.8m/s2

1) Initial velocity

v2−u1=2as

⇒0−u2=2(9.8)(20)

u2=393m/sec

⇒u=19.8m/sec

2) Final velocity

u=0m/sec

v=?

a=9.8m/s2

s=20m

v=19.8m/s

3)S1=?,t1=0.5sec,S2=?t2=2.5sec

For S1=ut1+21a(t1)2=19.8×0.5+21(−9.8)(0)2=8.675m

For S2=ut2+2