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Q: A car starts from rest runs for 2 minutes with an uniform acceleration of 1 ms⁻² . Find the speed obtained by car.
  • A. 120 ms⁻²
  • B. 120 ms⁻¹
  • C. 120 ms¹
  • D. 120 ms²
Correct Answer: Option B - Here, u = 0 a = 1 m/sec² t = 2 minute = 60 x 2 = 120 sec From first equation of motion v = u + at v = 0 +1 x 120 = 120 ms⁻¹
B. Here, u = 0 a = 1 m/sec² t = 2 minute = 60 x 2 = 120 sec From first equation of motion v = u + at v = 0 +1 x 120 = 120 ms⁻¹

Explanations:

Here, u = 0 a = 1 m/sec² t = 2 minute = 60 x 2 = 120 sec From first equation of motion v = u + at v = 0 +1 x 120 = 120 ms⁻¹