Question

the velocity of a car increases from 36km/h to 108km/h in 10s. it's acceleration is??

Answer 1

Answer:

Aceeleration= change in velocity /time

=(30-10)/10

=2m/s^2

Explanation:

V1=36*(5/18)m/s=20

V2=108*(5/18)m/s=30

Answer 2

1km/hr=5/18mper sec.

therefore,

108km/hr= 108×5/18=30m/s

similarly, 36km/hr=10m/sec.

acceleration is change in velocity per unit time.

a=∆v/∆t

a=(30-10)/10sec.

=20/10

=2m/sec^2.