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A Bus Moving Along a Straight Line at 20 M/S Undergoes an Acceleration of 4 M/S2. After 2 Seconds, Its Speed Will Be: - Science

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MCQ

A bus moving along a straight line at 20 m/s undergoes an acceleration of 4 m/s2. After 2 seconds, its speed will be:

Options

  •  8 m/s

  • 12 m/s

  • 16 m/s

  • 28 m/s

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Solution

28 m/s
Acceleration of the moving object is 4 m/s2
Initial velocity is 20 m/s.
Time taken is 2 sec.
By applying 1st equation of motion we get,
v = u + at
   = 20 + 2(4)
   = 28 m/s
So, the answer is
(d) 28 m/s

Concept: Measuring the Rate of Motion - Speed with Direction
  Is there an error in this question or solution?
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APPEARS IN

Lakhmir Singh Science Class 9 Physics
Chapter 1 Motion
MCQ | Q 42 | Page 42

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