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3 years ago

PIUDICITIS CONSECulvely and Circle your aliswers. Lilyo

Physics

1 answer:

mihalych1998 [28]3 years ago

7 0

Answer:

The angular acceleration of CD player is $13.93\ rad/s^2$ .

Explanation:

Initial angular speed of a CD player is 0 and final angular speed is 41.8 rad/s. Time to change the angular speed is 3 s.

It is required to find the angular acceleration. The change in angular speed of the CD player divided by time taken is called its angular acceleration. It can be given by :

$a=\dfrac{\omega_f-\omega_i}{t}\\\\a=\dfrac{41.8-0}{3}\\\\a=13.94\ rad/s^2$

So, the angular acceleration of CD player is $13.93\ rad/s^2$ .

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Answer:

Explanation:

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Where:

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Answer:

Explanation:

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3 years ago

During a braking test, a car is brought to rest beginning from an initial speed of 60 mi/hr in a distance of 120 ft. With the sa

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Answer:

Explanation:

Given

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using equation of motion

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where v=final velocity

u=initial velocity

a=acceleration

s=displacement

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using same relation we get

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divide 1 and 2 we get

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