3 years ago

Identifying Mechanical Energy

Physics

2 answers:

sergij07 [2.7K]3 years ago

6 0

Ummmm ok so I don’t really know

arsen [322]3 years ago

3 0

Bruh ima be honest with you idek

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A combination reaction is when two or more reactants __ to form one product

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Answer:

A combined reaction is when two or more reagents combine __ to form a product

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2 years ago

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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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3 years ago