Question

a man throws a ball of 0.5kg vertically upwards with the velocity of 25m/s find :
a. initial momentum of ball
b. momentum of ball at highest point.

Answer 1

here is your answer

given :

mass = 0.5 kg

initial velocity = 25 m/s

to find :

1) initial momentum of the ball

2) momentum of the ball at highest point

solution :

1) initial momentum of the ball = Mass×initial velocity

initial momentum of the ball = 0.5×25

initial momentum of the ball = 12.5 kgm/s

so, initial momentum of the ball is 12.5 kgm/s

2) momentum of the ball at highest point

at highest point velocity becomes zero
so, momentum of the ball at highest point will be zero (m*v = 0.5*0 = 0).

Answer 2

HEYA MATE !!
I'LL TRY TO SOLVE..
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The velocity of the ball at the highest point will be 0 m/sec.

hope it helps you..
*proudly Indian*