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Q.

A body of mass Question Image accelerates from rest at the rate of Question Image. What distance would the body travel in 20 seconds?

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a

250 meters

b

100 meters

c

800 meters

d

200 meters

answer is C.

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Detailed Solution

Concept: Equation of motion: These are the mathematical equations used to find the final velocity, displacements, time, and so on of a moving object without taking into account the force acting on it.

These equations are only valid when the body's acceleration is constant and it moves in a straight line.

There are three types of motion equations:

Question Image

Question Image

Question Image

Here, Question Image final velocity, Question Image initial velocity, Question Image distance travelled by the body under motion, a = acceleration of body under motion, and Question Image time taken by the body under motion.

Given that:

Mass of body Question Image

Acceleration Question Image

Time Question Image seconds

Since, Question Image

As the body starts from rest Question Image i.e. Initial velocity Question Image

Question Image

Question Image

Question Image


 

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A body of mass accelerates from rest at the rate of . What distance would the body travel in 20 seconds?