Question

Displacement of a particle is given by (t-2²)where x os in metre and t is in sec.find distnace in first 4 sec

Answer 1

Answer:

X =(t-2)^2 = t^2–4t + 4

v = 2t - 4

Distance covered = integ(|v|dt)

= |t^2–4t|

= 4t - t^2 for t = 0 to 2

= t^2 - 4t for t = 2 to 4

= 8 units

Explanation: