A car starts from rest and accelerates uniformly over a time of 10 seconds for a distance of 215 m. What is the acceleration of the car?

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Answer 1 · 2018-01-19T05:04:41

#"4.3 m/s"^2#

Since it is given that car starts from rest so initial velocity #u= "0 m/s"#. The position of car is given, so #S = "215 m"#.

#S = ut+1/2at^2#

So

#S = 0*10+1/2a(10)^2#

#215= 1/2a*100#

#215*2 = 100a#

#430 = 100 a#

Thus,

#a = "4.3 m/s"^2#