Question

1. When will you say a body is in
(1) uniform acceleration? (ii) non-
uniform acceleration?
2. Abus decreases its speed from
80 km hl to 60 km h- in 5 s.
Find the acceleration of the bus.
3. A train starting from a railway
station and moving with uniform
acceleration attains a speed
40 km h in 10 minutes. Find its
acceleration

Answer 1

Final speed of the train, v = 40 km/h = × 40 = 11.11 m/s. Time taken to attain the speed = 10 minutes = 10 × 60 = 600 sec. Acceleration of the train. Hence, Acceleration of the train is 0.0185 m/s².