Question

Question:

Answer 1

Answer: A: 1,212 kg

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-Maggie

Answer 2

The mass of the car should be A) 1212 kg

Explanation:

We can solve the problem by using Newton's second law of motion, which states that

$F=ma$

where:

F is the force produced by the engine

m is the mass of the car

a is its acceleration

In the first situation we have

m = 1515 kg

$a=12 m/s^2$ is the acceleration

Solving for F, we find the force produced by the engine:

$F=(1515)(12)=18,180 N$

Now we want the car to reach an acceleration of

$a'=15 m/s^2$

Using the same engine, therefore the force produced is still

F = 18,180 N

Re-arranging the equation for m', we find what should be the new mass of the car:

$F=m'a'\\m' = \frac{F}{a'}=\frac{18180}{15}=1212 kg$

Learn more about Newton's second law:

brainly.com/question/3820012

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