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Sagot :
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
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