Question

A body moves rectilinearly with a velocity v = (t-1)(t-2) then find its average velocity and average speed in 4 second

Answer 1

Answer:

Acceleration is defined as

dt

dv

Also a body retards when the acceleration is negative

Here velocity is given as v=t

2

−t

So, here

dt

dv

=2t−1

which is negative for interval (0,

2

1

)

So, finally the body retards from time interval t=0tot=

2

1

which means t<

2

1

Explanation:

please mark me as brainliest