Question

A car accelerates uniformly from 18kmh-1 to 36kmh-1 in 5minutes.The acceleration is

Answer 1

Answer:

Given,

u=18km/h=  

60×60

18×1000

​  

               

5m/s

v=36km/h=  

60×60

36×1000 =10m/s

t=5sec

acceleration, a=?

1st equation of motion,

v=u+at

10=5+5a

5a=5

a=  5/5

​=1m/s

Explanation:

Answer 2

Answer:

correct question

A car accelerates uniformly from 18kmh-1 to 36kmh-1 in 5 second.The acceleration is

Given

intial velocity= 18 km/hr

final Velocity= 36km /hr

time = 5 minutes

to find

Acceleration

solution

▪️According to Newton's first law of motion :

$\fbox{v= u+ at}</p><p>$

◾conversions

inital Velocity= 18 km/hr= 18 x 5/18= 5 m/sec

final Velocity= 36 km/hr= 10 m/sec

▪️put the values in the above formula-

▪️let the Acceleration of the car be 'a'

10= 5+ 5a

a= 5/5

a= 1 m/sec²