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3 years ago

Angular velocity and linear velocity have the same dimensions. This statement is:

Physics

1 answer:

iragen [17]3 years ago

5 0

I think it would be C: Sometimes true and sometimes false. It varies.

Hope this helped, have a great day! :D

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In a 350-m race, runner A starts from rest and accelerates at 1.6 m/s^2 for the first 30 m and then runs at constant speed. Runn

kifflom [539]

Answer:

B can take 0.64 sec for the longest nap .

Explanation:

Given that,

Total distance = 350 m

Acceleration of A = 1.6 m/s²

Distance = 30 m

Acceleration of B = 2.0 m/s²

We need to calculate the time for A

Using equation of motion

$s=ut+\dfrac{1}{2}at_{A}^2$

Put the value in the equation

$30=0+\dfrac{1}{2}\times1.6\times t_{A}^2$

$t_{A}=\sqrt{\dfrac{30\times2}{1.6}}$

$t_{A}=6.12\ sec$

We need to calculate the time for B

Using equation of motion

$s=ut+\dfrac{1}{2}at_{B}^2$

Put the value in the equation

$30=0+\dfrac{1}{2}\times2.0\times t_{B}^2$

$t_{B}=\sqrt{\dfrac{30\times2}{2.0}}$

$t_{B}=5.48\ sec$

We need to calculate the time for longest nap

Using formula for difference of time

$t'=t_{A}-t_{B}$

$t'=6.12-5.48$

$t'=0.64\ s$

Hence, B can take 0.64 sec for the longest nap .

4 0

3 years ago

Free tingsssssssssss

il63 [147K]

Explanation:

yayyy thx u soo muchihuhuhu

5 0

2 years ago

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This is an example of a ____________ resource using _______.

aleksklad [387]

Answer:

Explanation:

I guess but not sure cause wind is soemthing you can get back electricity is soemthing you can't

5 0

3 years ago

A rock moving a 15m/s accelerates at 9.8m/s for 12s. what is the final velocity of the rock?

ryzh [129]

1.25 is the answer to tht if im right but could be wrong

4 0

3 years ago

The train slows down at the railroad crossing. Is that acceleration, velocity, speed, of none of the above?

Vlad [161]

Answer:

none of the above

Explanation:

im pretty positive this is the answer tell me if i am wrong please

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3 years ago