Question

A bus starting from rest moves with a uniform acceleration of 0.1 m s² for 2 minutes. Find (a) the speed acquired, (b) the distance travelled

Answer 1

Answer:

Explanation:

speed acquired=2minutes*0.1m/s^2=120*1/10=12m/s

distance travelled=1440m

Answer 2

Answer:-

Speed acquired finally by the bus is 12 m/s.

Distance travelled by the bus is 720 m.

Given:-

Initial speed of the bus, u= 0 m/s

Acceleration, a = 0.1 m/s²  

Time taken, t = 2 min = 2×60 = 120 sec

(a) To find speed acquired, we use v= u + at

⇒ v= u + at

⇒ v= 0 + 0.1 × 120

⇒ v= 12 ms-1

(b) To find the distance travelled, we use  v² - u² = 2as

s is the distance covered by the bus

⇒ (12)²  - (0)² = 2(0.1) s

⇒ 144 = 0.2

⇒ s = 720 m

Speed acquired finally by the bus is 12 m/s.

Distance travelled by the bus is 720 m.