Question

A car increases its speed from 20 kilometre per hour in 10 seconds to 100kilometre per hour find its acc

Answer 1

Answer:

8km

Explanation:

acceleration =v-u/t

a=100-20/10

a=80/10

a=8km/sec^2

Answer 2

Hey there, this is your answer.

Initial Velocity = 20 km/hr = $20 * \frac{5}{18}$ = $\frac{50}{9}$ = 5.55 m/s.

Final Velocity = 100 km/hr = $100 * \frac{5}{18}$ = $\frac{250}{9}$ = 27.77 m/s.

Time = 10 sec.

∴ Acceleration = $\frac{(v-u)}{t}$

                         = $\frac{(27.77 - 5.55)}{10}$

                         = $\frac{22.22}{10}$ or $2.22 m/s^{2}$