Question

1. Describe the motion of the race car shown in the graphic

Answer 1

The car will slow down due to the negative acceleration (backward)

Explanation:

The figure is missing: find it in attachment.

To answer this question, we have to use Newton's second law, which states that:

$F=ma$

where

F is the net force on an object

m is its mass

a is its acceleration

We have to apply this law separately on the horizontal direction and vertical direction.

- In the vertical direction, we have two forces acting on the car: 2000 N upward and 2000 N downward, so they cancel out, and the net force in the vertical direction is zero.

- In the horizontal direction, the net force is instead

$F=6000 N - 8000 N = -2000 N$

In the backward direction (to the right).

So, according to Newton's second law, the car will experience a horizontal acceleration:

$a=\frac{F}{m}= -\frac{2000 N}{m}$

And the acceleration has the same direction as the net force (so, backward). This means that the acceleration is opposite to the direction of motion of the car, so the car will slow down, since its velocity will decrease.

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