Question

A body moving along a straight line at 20 m/s undergoes an acceleration of m/s ^2 what will be its speed after 2s

Answer 1

Complete Question:

A body moving along a straight line at 20 m/s undergoes an acceleration of 4 m/s². What will be its speed after 2s ?

Answer:

28 m/s is the required solution.

Given:

• Initial velocity (u) = 20 m/s
• Acceleration (a) = 4 m/s²
• Time (t) = 2 s

To find:

Speed after 2 seconds.

Solution:

We know that,

v = u + at

(where v is final velocity, u is initial velocity, a is acceleration and t is time.)

By keeping the values, we get

v = 20 + (4 × 2)

= 20 + 8 = 28 m/s

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