Physics, 11.02.2021 23:30 puchie1225

2) Suddenly the rope breaks and the centripetal force on the ball is suddenly removed. Which statement best describes the motion of the ball? The ball will
A. Continue to travel in a circular path at a constant velocity because it is NOT experiencing an
unbalanced force.
B. Travel along a linear, straight path at a constant velocity because it IS experiencing an
unbalanced force.
C. Continue to travel in a circular path at a constant velocity because it IS experiencing an
unbalanced force.
D. Travel along a linear, straight path and at a constant velocity because it's NO LONGER
experiencing an unbalanced force.
3) A ball is whirled in a circle. If
the string is released when the

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Answer from: Quest

If there was no gravity then their would be no downword force on the football to have it return the the grownd, and if there was no friction (mainly air friction) then there would be no opposing force the stop the ball from moving through the air allowing the ball to travle ∞.

Answer from: Quest

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

$f\alpha \frac{dp}{dt}$

⇒ $f= k \frac{dp}{dt}$

here k is the proportionality constant whose value is 1.

$f=\frac{dp}{dt}$

$f= \frac{d[mv]}{dt}$

$f= m\frac{dv}{dt} +v\frac{dm}{dt}$

$f=ma+v\frac{dm}{dt}$ [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

Answer from: Quest

Answeroutward from: source;

Answer from: Quest

Make them both to where they have the denominator of 18that makes 3/2 equal 27/18 and 1/9 equal 2/18so now you have 27/18x+5=2/18subtract 5 from the other sideso now you have 27/18x+2/18-5then subtract 2/18 from 27/18 to get 25/18x=-5then divide 25/18 by -5 and your answer will be -5/18

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2) Suddenly the rope breaks and the centripetal force on the ball is suddenly removed. Which statem...

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