A car started from rest and reached a velocity of 126 km/h east in 7 seconds. What is the displacement the car traveled?

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Answer 1 · 2017-10-16T04:23:57

#therefore displacement = 245 m# eastwards.

#=> 0.245 km# eastwards.

#u = 0 # km/hr = 0 m/s --------- initial velocity (car at rest).

# v= 126# km/hr = #126\times1000/ 3600 #m/s ---------final velocity.

#=> v= 35# m/s

#t= 7#seconds

We know,

#velocity= (displacement) / (time)#

#therefore displacement = velocity \ times time#

#therefore displacement = 35 m/s \times 7 s #

#therefore displacement = 245 m# eastwards.

Or

#therefore displacement = 245/1000 = 0.245 km# eastwards.