When you see a traffic light turn red, you apply the brakes and stop with constant acceleration. if your initial speed was 23 m/s , what is your average speed during braking? express your answer to two significant figures and include the appropriate units.

Let the initial velocity be u = 23 m/s

Let the final velocity be v.

Vehicle stops finally, therefore v = 0 m/s

Here during the braking, vehicle decelerates with constant acceleration,  thus the change in velocity is linear from initial velocity to final velocity.

for the Given condition:

Write the expression for the average speed

Substitute the values in the above expression.

Hence, the average speed during braking is 11.5 m/s

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explanation: