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AnnZ [28]
2 years ago
7

How long will it take a car to go from 0 to 45 km/hr if they are accelerating at 5 km/hr/s?

Physics
1 answer:
Mandarinka [93]2 years ago
4 0

Answer:

9 seconds

Explanation:

acceleration =  \frac{final \: speed - initial \: speed}{time \: taken}

5km/ hr/ s =  \frac{45 - 0 (km/ h)}{t}

cross multiplying

5t = 45 secs \\ t = 9 \: secs

it will take 9secs for the car to go from 0 to 45 km/ h

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2 years ago
. Consider a fully extended arm that is rotating about the shoulder such that with a shoulder-to-hand length of 30 cm. If the ar
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Answer:

13.309 m/s²

Explanation:

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Let the tangential acceleration is a.

by using first equation of motion

v = u + at

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a = 0.5 m/s²

Let the centripetal acceleration is a'.

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The tangential acceleration and the centripetal acceleration are both perpendicular to each other. So, the net acceleration is given by

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A=\sqrt{0.5^{2}+13.3^{2}}

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3 years ago
A person is riding on a Ferris wheel. When the wheel makes one complete turn, the net work done on the person by the gravitation
lara31 [8.8K]

Answer:

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d = Vertical height from the ground

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interna

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8 0
2 years ago
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E = I R

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8 0
3 years ago
Read 2 more answers
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