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A car moving at 80 mph has a speed of 35.8 m/s. What acceleration would it have if it took 5.0 seconds to come to a complete stop?

Answer :

Final answer:

The car's acceleration, when it comes to a complete stop in 5.0 seconds from a speed of 35.8 m/s, is -7.16 m/s^2. The negative sign indicates deceleration.

Explanation:

The question deals with the concept of acceleration, which in physics, is the rate of change of velocity of an object. To calculate acceleration, we can use the basic formula of acceleration, which is a = (final velocity - initial velocity)/time. In this situation, the final velocity is 0 because the car is coming to a complete stop and the initial velocity is 35.8 m/s. Also, the time is given as 5.0 s.

So the acceleration a = (0 - 35.8 m/s) / 5.0 s. This equals to -7.16 m/s². The negative sign indicates deceleration or slowing down.

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