Question

if initial velocity is 10 metre per second and retardation is minus 2 metre per second square find average speed in 6 second​

Answer 1

Answer:

u = 10m/s

A (retardation or negative acceleration) =

${ - 2metre \: per \: second}^{2}$

T = 6 sec

Using 2nd equation of motion,

i.e

$s = ut + \frac{1}{2} {at}^{2}$

= (10 × 6) + 1/2 × [(-2) × 6 ×6]

= 60 -36 = 24 metres

Average speed = Total Distance/Total Time

= 24/6 = 4 m/s

Answer 2

Answer:

4 m/s is the average velocity