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2 years ago

8

A ball took 0.45s to hit the ground 0.72m from the table. What was the horizontal velocity of the ball as it rolled off the tabl

e?

1 answer:

dusya [7]2 years ago

8 0

the ball hits the ground a very high velocity

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An engineer wants to design an oval racetrack such that 3.20 × 10 3 lb racecars can round the exactly 1000 ft radius turns at 10

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Answer:

The banking angle necessary for the race cars is 34.84°

Explanation:

For normal reaction the expression is:

$\\Nsin\theta = \frac{mv^{2} }{R} =Fc\\tan\theta =\frac{v^{2} }{Rg} \\\theta =tan^{-1} (\frac{v^{2} }{Rg} )\\\theta =tan^{-1} (\frac{(102*0.447)^{2} }{1000*0.3048*9.8} )=34.84$

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1 year ago

The particle starts from rest at t=0. What is the magnitude p of the momentum of the particle at time t? Assume that t>0. Exp

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Answer:

Ft

Explanation:

We are given that

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Let mass of particle=m

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Final velocity , $v=a+ut$

Substitute the values

$v=0+\frac{F}{m}t=\frac{F}{m}t$

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Using the formula

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2 years ago

if a toaster transfers 100 joules of energy every ten seconds, what is the power rating of the toaster include the units in your

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Answer:

that is the solution to the question

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1 year ago

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A glider of mass m1 on a frictionless horizontal track is connected to an object of mass m2 by a massless string. The glider acc

inysia [295]

Answer:

m2g -> T2 -> T1

Explanation:

m2g -> T2 -> T1

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1 year ago

Finally, you are ready to answer the main question. Cheetahs, the fastest of the great cats, can reach 50.0 miles/hour miles/hou

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Their acceleration in meters per second squared is 10.07m/s^2

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t = 2.22 s

So,

Acceleration a = ∆v/t = 22.352m/s ÷ 2.22s

a = 10.07m/s^2

Their acceleration in meters per second squared is 10.07m/s^2

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1 year ago

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