Question

a car of mass 2kg is at rest what should be the magnitude of force which will make the body move with a speed 30m/s at the end of 1s

Answer 1

m= 2 kg
u = 0 m/s
v = 30 m/s
t = 1s
f = m (v-u)/t
  = 2*(30-0)/1
   =2*30
    =60 N
 Ans

Answer 2

"Given that M= 2 kg

Then you have to find out u = 0 m/s

v = 30 m/s, t = 1s

f = m (v-u)/t = 2*(30-0)/1

=2*30

=60 N.

Hence the student make use of the formula and apply the values to get answer of N in a fine manner.

"