Question

a car at rest accelerates uniformly to a speed of 20km/h in a half minute . the dist covered by it is​

Answer 1

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/h²

Putting the values in S=ut+ 1/2at²

S=0∗0.5+ 1/2 ∗40∗0.5²

S=5km