Question

if a velocity is given by the expression v=2t+3,find the force acting on particle mass 2kg ​

Answer 1

Answer:

Given,

Velocity, v=(2t

i

^

+4

j

^

)

Change in velocity at time(t=2secandt=0), Δv=v

t=2

−v

t=0

=(4

i

^

+4

j

^

)−4

j

^

=4

i

^

.

Impulse, I=F.Δt=mΔv=2×4

i

^

=8

i

^

Hence, impulses is 8

i

^