Question

3. A bus increase its speed from 36 km/h to 72km/h in 10 second. Its
acceleration is (MARK-1)
a, 2m/s2
b. 1m/s2
c. 3.6m/s2
d.5m/s?​

Answer 1

Answer:

1m/second²

Solution:

acceleration = Rate of change of Velocity.

initial velocity- 36km/h

final Velocity-72km/h

convert it into m/s

initial velocity- 10m/s

final velocity-20m/s

Acceleration- V-u/T

→ Acceleration = 20-10/10

→ 1m/s²

Answer 2

Answer:

b.1m/s2

Explanation:

Initial velocity = u = 36 km/hr = 10 m/s.

Final Velocity = v = 72 km/hr = 20 m/s

Time = t = 10 seconds.

Therefore,

acceleration = a = v-u/t

= (20-10/10) m/s^2

= (10/10) m/s^2

=1 m/s^2. [Ans]