Question

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

Answer 1

Answer:

Here you go

Step-by-step explanation:

u = 0km/h

v= 20km/h

t= 30/60 hr = 1/2hr

therefore, using first equation of motion

v=u+at

20=0+a(1/2)

20=a/2 => a =40km/h²

using second equation of motion

s=ut+1/2at²

s=0(1/2)+1/2(40)(1/2)²

s= 0+5 =5km

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