Question

87. A bullet of mass 1 g shot vertically up by a gun gives a force of 2 N for 0.001 s. Calculate the maximum height attained by the bullet. Neglect air friction and take g = 10 m s-2.​

Answer 1

Answer:

force = change in momentam/time

2 =(mv-mu)/10-3

u=0 so

v = 2m/s

now we have v2 = u2+2as

when bullet reaches maximum height then its velocity becomes 0..

0 = u2-2gH

H=u2/2g=0.2m