Question

An athlete runs a 100 m race, starts from rest and covers three fourth of race with an acceleration of 1.5 metre per square second, attains a velocity v. Than covers last one fourth part of the race with the uniform velocity attained v. Find the total time taken by athlete in seconds to complete the race.

Answer 1

Answer:

At first I obtain the velocity and then time .

After this I obtain the time of last distance .....

3/4 of 100m is - 75m

1/4 of 100m is - 25m

And I use here equations of motion.....

Explanation:

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