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3 years ago

If the brakes on a 1,600 kg car exert a stopping force of

Physics

1 answer:

ra1l [238]3 years ago

8 0

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

<h3 /><h3>What is impulse</h3>

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: brainly.com/question/20586658

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3 years ago

A small button placed on a horizontal rotating platform with diameter 0.520 m will revolve with the platform when it is brought

yawa3891 [41]

For the position of button we can use force balance as

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so here we will have

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4 years ago

Which three steps, placed in the proper order, are required for a nuclear chain reaction?.

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<h3>What are the three steps of nuclear fission ?</h3>

1. Initiation

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2. Propagation:-

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3. Termination:

The chain will come to an end eventually. Termination might take place if the reactant $U_{235} ^{92}$ is exhausted or if the subsequent neutrons in the chain leave the sample without being absorbed by $U_{235} ^{92}$ .

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Answer:

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Explanation:

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