Question

A car increases its speed from 20 kilometre per hour to 30 kilometre per hour in 10 second its acceleration is

Answer 1

A car increases its speed from 20 kilometre per hour to 30 kilometre per hour in 10 second its acceleration is

Ans = A car speed is v1 =20km /hr=20x10^3 /60x60=5.56m/sec

to v2= 30km/hr=30x10^3 /60x60=8.34m/sec

time =10 sec

Acceleration =change in velocity /t

acceleration = v2-v1/t

= 8.34-5.56/10

=7.784

therefore acceleration of the car is 7.784 m/sec

thanks