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The velocity of a truck changes form 3 m/s to 5 m/s in 5s. What is the acceleration in m/s^2?(a) 0.4(b) 0.5(c) 4.0(d) 5.0The question was asked in an online quiz.I'd like to ask this question from Motion in a Straight Line in chapter Motion in a Straight Line of Physics – Class 11

Answer»

Right choice is (B) 0.5

Easiest explanation: Acceleration is the RATE of change of velocity. Here, the velocity CHANGES FORM 3 m/s to 5 m/s in 5s. Hence, acceleration = (5-3)/5 = 0.4 m/s^2.



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