Question

A car increase is speed from20 km /hr to 50 km/hr in 10 seconds What will be its acceleration

Answer 1

u = 20 km/h

= $\frac{20 ×1000}{3600}$

= 5.56 m/s

v = 50 km/h

= $\frac{50 ×1000}{3600}$

= 13.89 m/s

t = 10s

a = $\frac{v - u}{t}$

= $\frac{13.89 - 5.56}{10}$

= $\frac{8.33}{10}$s

= 0.833 m/s^2