Question

A car start from rest and acquires a velocity of 54km per hour in 2min find the acceleration and distance travel by the car during this time

Answer 1

HI there !!!

Here ,
As the car is starting from rest ,
Initial velocity = u = 0 m/s

Final velocity = v = 54 km/hr
To convert km/hr to m/s , we multiply it by 5/18

Final velocity = v = 54 km/hr = 54 x 5/18
= 15 m/s

Time = t = 2 sec

a = acceleration

Equation of motion :
v = u + at

15 = 0 + 2a

a = 15/2 = 7.5 m/s²

s = distance traveled

Equation of motion :

s = ut + 1/2 at²

= 0 + 1/2 × 7.5 × 2²
= 15 metres

hope it helps !!☺☺☺☺