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3 years ago

Please Help test is worth a lot !!!

Physics

1 answer:

swat323 years ago

3 0

Answer:

3.667m/s

Explanation:

Momentum = mass * speed.

Momentum before (A+B) = momentum after (A+B)

$m_{a}u_{a}+m_{b}u_{b}=m_{a}v_{a}+m_{b}v_{b}$

100*4 + 150*0 = 100(-1.5) + 150v $_{b}$

400 = -150 + 150v $_{b}$

150v $_{b}$ = 550

v $_{b}$ =3.667m/s

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Solve for x. 4(x+1)≤4x+3

alexdok [17]

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Since 4 < 3 is not true there is no solution.

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3 years ago

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Near the end of a marathon race, the first two runners are separated by a distance of 45.6 m. The front runner has a velocity of

morpeh [17]

Answer:17.08 s

Explanation:

Given

distance between First and second Runner is 45.6 m

speed of first runner $(v_1)$ =3.1 m/s

speed of second runner $(v_2)$ =4.65 m/s

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4 years ago

For a certain RLC circuit the maximum generator EMF is 125 V and the maximum current is 3.20 A. If le a) the impedance of the ci

MAXImum [283]

Answer:

Part (i)

Z = 39.06 ohm

Part (ii)

R = 21.7 ohm

Explanation:

a) here we know that

maximum value of EMF = 125 V

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now by ohm's law we can find the impedence as

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now we will have

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Part b)

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now we have

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3 years ago

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3 years ago

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djverab [1.8K]

Average speed =

(distance covered during some period of time)
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