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A car starts from rest and accelerates uniformly until it reaches a speed of 80.0 km/h in 5.0 s. How long did it take for the car to go from 50.0 km/h to 60.0 km/h?

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Final answer:

The car took 1.107 seconds to go from 50.0 km/h to 60.0 km/h with a constant acceleration.

Step-by-step explanation:

To find the time it took for the car to go from 50.0 km/h to 60.0 km/h, we can use the equation:

acceleration = change in velocity / time

Since the car is accelerating uniformly, the acceleration will be constant. We know that the final velocity is 60.0 km/h and the initial velocity is 50.0 km/h. Converting these velocities to m/s, we get 16.7 m/s and 13.9 m/s respectively.

Using the equation, we can solve for time:

acceleration = (final velocity - initial velocity) / time

Substituting the known values:

(60.0 km/h - 50.0 km/h) / time = 16.7 m/s - 13.9 m/s

Simplifying the equation gives:

3.1 m/s / time = 2.8 m/s

Solving for time, we get:

time = 3.1 m/s / 2.8 m/s = 1.107 s

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