Answer:
If a body of mass (m), moving at velocity (u) accelerates uniformly
at.(a) for time 'f, so that its velocity changes to v, then
initial momentum
and final momentum
Change
in momentum
According to the second law of motion, force
[where,]
Here,
Given,
and
(i) From third equation of motion,
Now, force applied, by the bullet, F = ma
[negative sign shown against the direction of motion]
The resistive force exerted by the sand on the bullet = 105
N
(i)From first equation of motion,
v = u + at
at
= v - u
Now, time taken by bullet to come to rest.
Hence, force (F) = 105 N and time
You need to login to perform this action.
You will be redirected in
3 sec