Question

an object of mass M is sliding with a velocity of 4 m s on a frictionless horizontal surface the retarding force necessary to stop the object is 1second is​

Answer 1

Answer:

(-4M) N

Explanation:

Given:

u=4m/s

v=0m/s , because to stop means velocity must be 0.

t= 1 sec

Now, a= (v-u) /t= -4m/s^2

Therefore force required=F

F=ma = M×(-4) = (-4M) N