Question

Please answer this.​

Answer 1

ANSWER

Take initial momentum (Pi)= mv
as the momentum is dropped by 25 percent, the final momentum will be

Pi-(25/100)Pi=(3/4)Pi=Pf

assuming that the mass is constant,

pf =3/4 mv = m (3/4 v)

velocity after travelling 3.5 cm = 3/4 v

from equation v²-u²=2as

(3/4)² v²-v² = 2a (3.5)

[9/16 v² - v²] / 2(3.5) = a

(-7/16 v²)/7 = a

a= -1/16 v²

now to find displacement at velocity=0

0²-v² = 2 (-1/16v²) s
1= (1/8) s

s= 8 cm

Hope it’s helpful for you

Mark as brainliest answer