Question

a ball is thrown vertically upwards with a velocity of 20m/s calculate- a) the time taken to reach the highest point. b)the maximum height attained by the ball. c)the time taken by the ball to reach the hands of the thrower from the highest point. d)the total time of journey of the ball [use g = 10 m/s]

can anyone please help me in this sum please please please ​

Answer 1

Answer:

a)v=u+at

0=20×-10×t

20=10t

t=2sec

b)v2-u2=2as

-u2=2as

-400=2×-10×s

400=20s

s=400/20=20

c)v2-u2=2as

v2=2×10×20

v=20

v=u+at

20=10t

t=2sec

d)total time=2+2=4sec