Answer :

Final answer:

The force required to slow the car down is -23.61 N.

Explanation:

To calculate the force required to slow down the car, we need to use the equation:

Force = (final velocity - initial velocity) / time

First, convert the initial and final velocities to m/s. Then, substitute the values into the equation to find the force:

Force = (30 km/h - 115 km/h) / 3.50 s

Force = (-85 km/h) / 3.50 s

Force = (-85 km/h * 1000 m/1 km * 1 h/3600 s) / 3.50 s

Force = - 23.61 m/s2

The force required to slow down the car is -23.61 N, where the negative sign indicates that the force is acting in the opposite direction of the car's motion.

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