Question

The displacement x (in metre) of a particle moving is given by

x=〖5 t〗^2 -3 t +15 where t is in second. Calculate the instantaneous velocity at t = 2 s.​

Answer 1

Answer:

17m/s

Step-by-step explanation:

x = 5t²-3t+15

On differentiating displacement x, we get instantaneous velocity = dx/dt

dx/dt = 10t-3

at t=2s

dx/dt = 10×2 - 3

= 20-3

= 17m/s