Question

. The displacement x of a particle along X axis is given by x = 3-5t+2t2
. If t is measured in seconds and x in metres, its velocity at t = 2 s is

Answer 1

Answer:

Step-by-step explanation:

x = 3-5t+2t^2

velocity=d/dx (x)

d/dx=4t-5                              [ 3 is a constant term its derivative is zero]

velocity at t =2

= 4(2)-5

=8-5

=3m/s

   [note:for this type of questions u should  be perfect with derivatives]

hope it helps u

Answer 2

The displacement x of a particle along X axis is given by x = 3-5t+2t2

. If t is measured in seconds and x in metres, its velocity at t = 2 s is 3m/s