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Anna71 [15]
3 years ago
15

I can't figure out what the third number I need is in this question a car traveling at +20 m/s applies the brakes and stops in 6

.5s. what is the cars acceleration.
Physics
1 answer:
dlinn [17]3 years ago
7 0

The acceleration is -3.1 m/s^2

Explanation:

The acceleration of an object is the rate of change in velocity of the object.

Mathematically, it is given by

a=\frac{v-u}{t}

where

u is the initial velocity

v is the final velocity

t is the time taken for the velocity to change from u to v

For the car in this problem, we have:

u = +20 m/s

v = 0 (because the car comes to a stop)

t = 6.5 s (time taken)

Therefore, the acceleration is

a=\frac{0-(+20)}{6.5}=-3.1 m/s^2

Where the negative sign means that the direction of the acceleration is opposite to the direction of the initial velocity.

Learn more about acceleration:

brainly.com/question/9527152

brainly.com/question/11181826

brainly.com/question/2506873

brainly.com/question/2562700

#LearnwithBrainly

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Answer:

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Explanation:

It is given that, a boxer punches a sheet of paper in midair and brings it from rest up to a speed of 30 m/s in 0.060 s.

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