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OverLord2011 [107]

3 years ago

6

If a car is accelerating downhill under a net force of 3674 N, what force must the brakes exert to cause the car to have constan

t velocity? a no force applied b a greater force c an equal force d a lesser force

1 answer:

nlexa [21]3 years ago

5 0

Answer:

Explanation:

hi

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Carbon monoxide prevents

Allushta [10]

Answer:

the blood from carrying oxygen to the tissues of the body

Explanation:

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3 years ago

How long does it take an automobile traveling 72.5 km/h to become even with a car that is traveling in another lane at 54.5 km/h

Novosadov [1.4K]

Answer:

7.83

Explanation:

Just using the speed ,distance and time relation..Let time be T

Use this formula and find the distance covered by automobile .

Do same for car ..

and at last subtract the distance of automobile to car =141.

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4 0

4 years ago

Determine the centripetal force upon a 40-kg child who makes 10 revolution around the cliffhanger in 29.3 seconds.the radius of

zysi [14]

Answer:

The centripetal force acting on the child is 39400.56 N.

Explanation:

Given:

Mass of the child is, $m=40\ kg$

Radius of the barrel is, $R=2.90\ m$

Number of revolutions are, $n =10$

Time taken for 10 revolutions is, $t=29.3\ s$

Therefore, the time period of the child is given as:

$T=\frac{n}{t}=\frac{10}{29.3}=0.341\ s$

Now, angular velocity is related to time period as:

$\omega=\frac{2\pi}{T}=\frac{2\pi}{0.341}=18.43\ rad/s$

Now, centripetal force acting on the child is given as:

$F_{c}=m\omega^2 R\\F_{c}=40\times (18.43)^2\times 2.90\\F_{c}=40\times 339.66\times 2.90\\F_{c}=39400.56\ N$

Therefore, the centripetal force acting on the child is 39400.56 N.

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3 years ago

PLEASEEEEEE HELPPPPPPP<br><br> Define resistance and discuss how it affects current.

PIT_PIT [208]

Answer:

Resistance is the opposing of the flow of current through a conductor.

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3 years ago

How is newtons law of motion used for testing the safety of automobile

Colt1911 [192]

Newton's first law of motion is an object in motion stays in motion until acted upon by another force. Driving at 30 mph in a car is going to stay constant until you crash the car into a wall, stopping the car.

3 0

4 years ago