A body moving along a straight line at 20 m/s undergoes an acceleration of 4 m/s2. After 2 s its speed will be (a) 8 m/s (b)10 m/s (c)16 m/s (d)28 m/s

Question

A body moving along a straight line at 20 m/s undergoes an acceleration of 4 m/s2. After 2 s its speed will be (a) 8 m/s (b)10 m/s (c)16 m/s (d)28 m/s
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Solution 1

The final speed of a body can be calculated using the formula:

v = u + at

where: v = final speed u = initial speed a = acceleration t = time

Given in the problem: u = 20 m/s a = 4 m/s² t = 2 s

Substituting these values into the formula:

v = 20 m/s + 4 m/s² * 2 s = 20 m/s + 8 m/s = 28 m/s

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Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study problem.
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