Question

Thank you Advance...;;
Q:
A body of mass 10 kg is moving over a smooth surface, whose equation of motion is given by the relation. s = 5t + 2t² where (s) is in metres and (t) in seconds. Find the magnitude of force responsible for the motion.

Thank you Advance...;;

Answer 1

10N

Answer 2

50N
s=5t+2t²m
v=5+4tm/s
a=5m/s²
Given:
m=10kg
So,F=ma
F=10*5
F=50N

Answer 3

s=5t+2t²m
v=5+4tm/s
a=4m/s²
Given:
m=10kg
So,F=ma
F=10*4
F=40N

Answer 4

s=5t+2t²m
v=5+4tm/s
a=4m/s²
Given:
m=10kg
So,F=ma
F=10*4
F=40N