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2 years ago

A car goes from 0 to 100 km/hr in 10 seconds. What is its acceleration

Physics

1 answer:

makvit [3.9K]2 years ago

6 0

Answer:

a= 2.7 m/s^2

Explanation:

acceleration: a

speed: V

Vf = final speed

Vi= initial speed (initial = beginning)

100 km/hour --> m/s

divide the speed value by 3.6

100/3.6= 27.8 m/s

$a = \frac{final speed - initialspeed}{time}$

$a= \frac{Vf - Vi}{t} \\$

$a= \frac{27-0}{10}$

$a= \frac{27}{10}$

a= 2.7 m/s^2

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False: the force of gravity acting on different objects is different and depends on their mass

Explanation:

The answer is false.

The force of gravity acting on an object (also known as weight) near the Earth's surface is given by:

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where:

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2 years ago

As the drawing illustrates, a siren can be made by blowing a jet of air through 20 equally spaced holes in a rotating disk. The

Aneli [31]

Answer:

ω = 630.2663 = 630[rad/s]

Explanation:

Solution:

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1rev(20 hole) -> 20(cycle)/rev

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2 years ago

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2 years ago