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A car is traveling at 7.0 m/s when the driver applies the brakes. the car moves 1.5 m before it comes to a complete stop. if the car had bee

A car is traveling at 7.0 m/s when the driver applies the brakes. the car moves 1.5 m before it comes to a complete stop. if the car had been moving at 14 m/s, how far would it have continued to move after the brakes were applied? assume the braking force in both cases is constant and the same.

Asked by: Guest | Views: 445
Total answers/comments: 1
Guest [Entry]

"Answer:

The distance of the car is 6 meters.

Explanation:

In our case, a car is travelling with an initial velocity then eventually slows down when the driver apply brakes. This type of solving problem is about Motions in a Straight Line.

Here, we are going to solve for the distance traveled by the car. To solve this, we are going to use the formula

where

and      are the final and initial velocities respectively, unit is in m/s

                 is the acceleration, unit is in m/

                 is the horizontal distance traveled by the car, unit is in meter (m)

For the given information

For the first scenario of the car, here are the following given:

= 7 m/s

= 0

x = 1.5 m

For the second scenario, the same car have this given:

= 14 m/s

= 0

x = ?

Solving the problem

1. First, we will solve for the acceleration of the car of the first scenario using the formula above

Substitute the given information, we have

Transpose to the left side of the equation, we have:

Simplify, then divide both side of the equation by , we have:

a = - 16.33 m/  

The negative sign for the acceleration means that the car is slowing down (or the term is deceleration) because the brakes were applied.

2. Now, we are ready to solve for the distance traveled by the car on the second scenario using the same formula.

Substitute the given information for the second scenario, we have:

Simplify the equation

Transpose to the left side of the equation and solve for , we have

Divide both sides of the equation by 32.67, we have:

x = 6 meters

Therefore, the distance traveled by the car is 6 meters for the second scenario.

To learn more about motions in a straight line, just click on the following links:

Additional example

       brainly.ph/question/1397501

Formula for acceleration

       brainly.ph/question/21070

       brainly.ph/question/104568

#LetsStudy"