Question

The velocity of an object changes from 10 m/s to 25 m/s in 5 seconds at uniform rate. The acceleration of object is [1] (1) 5 m/s2 (2) 3 m/s2 (3) 15 m/s2 (4) Zero

Answer 1

Answer:

Acceleration = Change in velocity / time

= final velocity - initial velocity /time

= 25-10/5

= 15/5

$3m\ {s}^{2}$

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Answer 2

The acceleration of the object according to the given data is equal to 3 metre per second square

Option 2

Explanation:

• acceleration is defined as the rate of change of the velocity of an object. In other words it is the change in velocity per unit time.

• Given, the initial velocity is equal to 10 metre per second
• The final velocity is 25 metre per second
• The change in velocity is 15 metre per second
• Hence the rate of change of  velocity in 5 second is equal to 15/5 = 3m/sec.

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