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Verdich [7]
4 years ago
5

Wil-E- Coyote drops a bowling ball off a cliff to try to catch the Roadrunner. The cliff is 132m high. What is its impact veloci

ty?​
Physics
1 answer:
omeli [17]4 years ago
3 0

Answer:

<u>Velocity impact is 50.86 m/s.</u>

Explanation:

If an "object of mass" "m" is dropped from "height" "h", then the "velocity" just before impact is  "v" . The "kinetic energy" before impact is equal to its "gravitational potential energy" at the height from which it was dropped: Kinetic energy = J.

\mathrm{v}^{2}=2 \mathrm{gh}

V is impact velocity

h height in meter = 132 m

\text { (gis referred to as the acceleration of gravity. Its value is } 9.8 \mathrm{m} / \mathrm{s}^{2} \text { on Earth }

\mathrm{V}^{2}=2 \times 9.8 \times 132

V^{2}=19.6 \times 132

V^{2}=2587.2

V=\sqrt{2587.2}

V = 50.86 m/s

<u>Velocity impact is 50.86 m/s</u>.

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The "Garbage Project" at the University of Arizona reports that the amount of paper discarded by households per week is normally
Lorico [155]

Answer:

54%

Explanation:

We are given that

S.D=4.2 lb

Mean=\mu=9.4 lb

We have to find the percentage of household throw out at least 9 lb of paper  a week.

Normal distribution formula :

P(X\geq a)=P(z\geq \frac{a-\mu}{\sigma})

We have a=9

P(X\geq 9)=P(z\geq \frac{9-9.4}{4.2})=P(z\geq -0.1)

P(X\geq 9)=1-P(z

P(X\geq 9)=1-0.4602=0.5398\times 100=54%

Hence, the  percentage of household throw out at least of paper a week=54%

7 0
3 years ago
If a marathon runner averages 9.51 mi/hr, how long does it take him to run a 26.220-mile marathon. Express your answers in hours
ASHA 777 [7]

Explanation:

Speed of the marathon runner, v = 9.51 mi/hr

Distance covered by the runner, d = 26.220 mile

Let t is the time taken by the marathon runner. We know that the speed of the runner is given by total distance divided by total time taken. Mathematically, it is given by :

v=\dfrac{d}{t}

t=\dfrac{d}{v}

t=\dfrac{26.220\ mi}{9.51\ mi/hr}

t = 2.75 hours

Since, 1 hour = 60 minutes

t = 165 minutes

Since, 1 minute = 60 seconds

t = 9900 seconds

Hence, this is the required solution.

7 0
4 years ago
How do I find the velocity of a moving object?
Aliun [14]
If you know the distance and the time I travelled that distance.


You just have to divide the time from the distance to get velocity

V =d
_

t
8 0
3 years ago
How much heat does 56 L of water need to absorb to raise its temperature from 350C to 740C?​
LekaFEV [45]

Answer:

300 L of water

Explanation:

7 0
3 years ago
A force of 15 newtons is applied to both Object A with a mass of 25 kilograms and Object B with a mass of 50 kilograms. What is
love history [14]

acceleration of object ais help the acceleration of an object b OD

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