Question

A car starting from rest accelerates uniformly to
acquire a speed 20 km h-1 in 30 min. The
distance travelled by car in this time interval will
be :​

Answer 1

Explanation:

10km is the time interval of a car in 30 min

Answer 2

Explanation:

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+ 1/2×40×0.5 ²

S=5km

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