Question

A Bus starts from a rest and attains 40km/h velocity after 10s. calculate the acceleration of the bus

Answer 1

heyy bro ur answer.............

Given:Intial velocity (u) = 0 (rest)Final velocity(v) = 40 km/hTime(t)= 10 sec = 10 / 3600=1/360hr
[ 1sec= 1/3600 h]
Acceleration (a)=( v-u)/t
Acceleration=( 40-0) /(1/360)= 40/(1/360)= 40× 360= 14400km/h²
Final velocity (v)= 40 km /h=( 40×1000)/3600= 100/9 m/sec
[ 1km= 1000m & 1 hr= 3600sec]
Acceleration (a)=( v-u)/t= (100/9)/10 = 10/9 m/s²= 1.11.... m/s²____________________________Acceleration (a) in km/h²= 14400km /h²
Acceleration (a) in m/s²= 10/9 = 1.11..m/s²____________________________Hope this will help you....
.................................i hope it will help u...........@kundan