Question

A bus increases its speed from 36 km/h to 72 km/h in 10 seconds. Its acceleration is :

Options

• 5 m/s²

• 2 m/s²

• 3.6 m/s²

• 1 m/s²

Answer 1

1 m/s²

Final velocity is = 72 km/h = 20 m/s
Initial velocity is = 36 km/h = 10 m/s
Time taken is 10 sec. so,
Acceleration = `(20-10)/10`
= 1 m/s²
So, the answer is
(d) 1 m/s²