Question

Average Speed
The average speed of a moving body is given by the relation.
Total distance travelled/Displacement
Average speed
Total time taken
Suppose, for a body moving along a straight line
* = Position of body from origin in time
x2 = Position of body from origin in time ty
Then, the displacement *-
time interval=14-4
Therefore, average velocity of the body is​

Answer 1

Answer:

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:

4+1=5m