15. A car starting from rest accelerates uniformly along a straight li

1.	15. A car starting from rest accelerates uniformly along a straight line. If it attains a velocityof 120 kmph in 12s, what is the acceleration of the car in m/s??
Answer» ANSWER: CORRECT option is B 5 km Here, u=0,v=20km/h,t=30min=0.5h Putting these VALUES in v=u+at 20=0+a∗0.5 We GET, a=40km/h 2 Putting the values in S=ut+ 2 1 at 2 S=0∗0.5+ 2 1 ∗40∗0.5 2 S=5km

15. A car starting from rest accelerates uniformly along a straight line. If it attains a velocityof 120 kmph in 12s, what is the acceleration of the car in m/s??

Answer»

CORRECT option is

5 km

Here, u=0,v=20km/h,t=30min=0.5h

Putting these VALUES in v=u+at

20=0+a∗0.5

We GET, a=40km/h

Putting the values in S=ut+

S=0∗0.5+

∗40∗0.5

S=5km