Question

A bus starting form 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

Initial velocity(u)= 0m/s

Acceleration(a)= 0.1m/s^-2

Time= 2 mins=60*2=120 secs

Final velocity=?

v=u+at
v=0+(0.1)120
v=0+12
v=12m/s

i.e.

Final Velocity= 12m/s

Distance(s)=v(v)-u(u)=2a

s=144-0=2(0.1)
s=144=0.2
s=1440=2
s=720m
 
Therefore,

(a)=12m/s
(b)=720m

Answer 2

v=u+at
v=0+0.1*120
v=12m/s

s=ut+½at²
s=0*120+½*0.1*120²
s=720