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Anvisha [2.4K]
3 years ago
11

A book is at rest on a table. Identify the correct free-body diagram for this situation.

Physics
2 answers:
Law Incorporation [45]3 years ago
5 0
Show a picture .. of what your doing
Helen [10]3 years ago
3 0

Answer:

the 3rd pic is correct

Explanation:

because the arrows are going away from each other.

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If the car’s speed decreases at a constant rate from 64 mi/h to 30 mi/h in 3.0 s, what is the magnitude of its acceleration, ass
mixas84 [53]

Answer:3.874 m/s^2

Explanation:

Given

Car speed decreases at a constant rate from 64 mi/h to 30 mi/h

in 3 sec

60mi/h \approx 26.8224m/s

34mi/h \approx 15.1994 m/s

we know acceleration is given by =\frac{velocity}{Time}

a=\frac{15.1994-26.8224}{3}

a=-3.874 m/s^2

negative indicates that it is stopping the car

Distance traveled

v^2-u^2=2as

\left ( 15.1994\right )^2-\left ( 26.8224\right )^2=2\left ( -3.874\right )s

s=\frac{488.419}{2\times 3.874}

s=63.038 m

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A thing that motivates or encourages one to do something is an incentive. Answer: Incentives.

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