Question

The position a body is given by x= Al +46t
wheat ALB are constance is position
it it is time Find (a) acceleration as a
function. (b) velocity 1 deceleration att t=5s.​

Answer 1

Explanation:

The correct option is A.

Given,

x=t

2

−4t+6

So, the change in velocity is:

dt

dx

=2t−4

Since velocity is changing,

At t=0,x

1

=6

At t=2,x

2

=2

So the magnitude of the distance traveled is:

6−2=4m

At t=3,x

3

=3

So distance traveled from t=2s to t=3s

x

3

−x

2

=3−2=1m

Thus the total distance is: