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2 years ago

14

Alan rents a private jet for the weekend. He flies 400 km south to New York, then flies 700 km west to Chicago, then 1200 km to

south Miami. What distance did he cover ? And what was his displacement

1 answer:

Ratling [72]2 years ago

7 0

Answer:

Total distance = 400+700+1200= 2300km

Explanation:

the resultant of d 1st right angle triangle + 1200

= 806.2 + 1200 = 2006.2km

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Ket [755]

Answer:

6 beats

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2 years ago

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

$(11.5)^2-(13)^2=2a(8.5)$

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

We know that

Acceleration= $a=\frac{v-u}{t}$

Substitute the values

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

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

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2 years ago

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2 years ago

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1 year ago

What is the acceleration of a dog that runs from 3 m/s to 6 m/s over a distance of 90m?

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Answer:

solution given:

acceleration (a)=?

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v²=u²+2as

substituting value

6²=3²+2*a*90

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2 years ago