3 years ago

Sue and Jenny kick a soccer ball at exactly

Physics

1 answer:

Paul [167]3 years ago

3 0

Answer:

a. Fr^2 = 119.7^2 + 49.9^2 = 16,818.1

Fr = 129.7 N.

b. tanA = Y/X = 49.9/119.7 = 0.41688

A = 22.63o = Direction.

Explanation:

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The speed of a box traveling on a horizontal friction surface changes from vi = 13 m/s to vf = 11.5 m/s in a distance of d = 8.5

KiRa [710]

Answer:

0.68 s

Explanation:

We are given that

Initial velocity of box= $u=13m/s$

Final velocity of box=v=11.5 m/s

Distance=d=8.5 m

We have to find the time taken by box to slow by this amount.

We know that

$v^2-u^2=2as$

Substitute the values

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$a=\frac{-36.75}{17}=-2.2m/s^2$

We know that

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Substitute the values

$-2.2=\frac{11.5-13}{t}$

$-2.2=\frac{-1.5}{t}$

$t=\frac{1.5}{2.2}=0.68 s$

Hence, the time taken by box to slow by this amount=0.68 s

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It is important that your muscles are very warm when doing this type of stretching.

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Answer:

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Which of the following statements about large scale mineral extraction is true?

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the inertial mass of an object is measured by exerting a force on the object and measuring the object's BLANK using an inertial

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If you ride your bike 20 miles and it takes you 120 minutes,what is your average speed

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