here mass=m=20g
velocity=v=4t^2+3t+6m/s
then force at t=2s
after differentiatin
here mass=m=20g
velocity=v=4t^2+3t+6m/s
then force at t=2s
after differentiating velocity we get acceleration
differentiate v= 4t^2+3t+6 WRT t
we get dv/dt=8t+3………(1)
put t=2 in (1)
8*2+3=19
so acceleration = 19 m/s^2
we know that,
force=mass*acceleration
force=20g*19m/s^2
=380N
ans:- 380N