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3 years ago

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If there was no frictional force acting on the ball in question 2 what would happen to the player? Use inertia and Newton’s 1st

law to explain in complete sentences

1 answer:

laila [671]3 years ago

6 0

Newwton's law of inertia states that an object will not be able to move unless force is applied to it

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Suppose 3 neutrons are released by an atom of U-235 in the first stage of a fission chain reaction. Each of these neutrons has e

DIA [1.3K]

The answer is A.) 27<span />

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2 years ago

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Determine the velocity that a car should have while traveling around a frictionless curve of radius 100m and that is banked 20 d

alex41 [277]

Answer:

$v=18.89\frac{m}{s}$

Explanation:

From the free-body diagram for the car, we have that the normal force has a vertical component and a horizontal component, and this component act as the centripetal force on the car:

$\sum F_x:Nsin(20^\circ)=ma_c(1)\\\sum F_y:Ncos(20^\circ)=mg(2)$

Solving N from (2) and replacing in (1):

$N=\frac{mg}{cos(20^\circ)}\\(\frac{mg}{cos(20^\circ)})sin(20^\circ)=ma_c\\gtan(20^\circ)=a_c$

The centripetal acceleration is given by:

$a_c=\frac{v^2}{r}$

Replacing and solving for v:

$gtan(20^\circ)=\frac{v^2}{r}\\v=\sqrt{grtan(20^\circ)}\\v=\sqrt{9.8\frac{m}{s^2}(100m)tan(20^\circ)}\\v=18.89\frac{m}{s}$

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3 years ago

In order to start an object moving, you must first overcome the force of _________ friction.

navik [9.2K]

It would be static friction which is what you have to overcome when an object is not in motion. When you move an object friction works against it like gravity and air resistance. I hope this helps!

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2 years ago

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Can you help me with these physics questions

Andre45 [30]

Answer:

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Explanation:

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3 years ago

2. Apply Mathematics If the amplitude of the 6 PM wave increases to 0.6 m, how many times greater would the energy become?

RoseWind [281]

Answer:

8 and 093 over 0.6 then 303

Explanation:

cross over the numbers and get the answer

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2 years ago