Answered

At Westonci.ca, we make it easy to get the answers you need from a community of informed and experienced contributors. Get precise and detailed answers to your questions from a knowledgeable community of experts on our Q&A platform. Discover in-depth answers to your questions from a wide network of professionals on our user-friendly Q&A platform.

If the brakes on a 1,600 kg car exert a stopping force of
-25,000 N and the car's velocity changes from 20 m/s to 0 m/s.
then how long does it take the car to stop?

Sagot :

asuwafohjames

The time it takes the car to stop is 1.28 seconds.

What is impulse

Impulse can be defined as the product of force and time.

To calculate the time it will take the car to stop. we apply the formula of impulse.

Formula:

  • Ft = m(v-u)............ Equation 1

Where:

  • F = Force on the car
  • m = mass of the car
  • v = final velocity
  • u = initial velocity.
  • t = time

Make t the subject of the equation

  • t = m(v-u)/F.............. Equation 2

From the question,

Given:

  • F = -25000 N
  • v = 0 m/s
  • u = 20 m/s
  • m = 1600 kg

Substitute these values into equation 2

  • t = 1600(0-20)/-25000
  • t = -3200/-2500
  • t = 1.28 seconds.

Hence, the time it takes the car to stop is 1.28 seconds.

Learn more about impulse of a force here: https://brainly.com/question/20586658

We appreciate your time. Please revisit us for more reliable answers to any questions you may have. Thanks for using our service. We're always here to provide accurate and up-to-date answers to all your queries. Your questions are important to us at Westonci.ca. Visit again for expert answers and reliable information.