Physics, 26.07.2019 13:30 labrandonanderson00

Jeremy accidently dropped his toy stuffed animal from the balcony of his apartment on the fourth floor. the toy hit the ground at a velocity of 16.0 meters/second. at impact, it took 2.0 seconds for the toy’s velocity to reach 0 meters/second. if the toy has a mass of 0.25 kilograms, what's the force of the impact?

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According to the second law of motion, force is the product of mass times acceleration. If we were to solve for the force, we would need the acceleration and the mass.

Acceleration was not given in the problem, but we can solve for it by using the velocity and the time because by definition, acceleration is the change in velocity over time.

$a = \frac{vf-vi}{t}$

The initial velocity is 16.0m/s because it is the first recorded time. The final is 0 m/s or the last recorded velocity. The time we will use is 2.0 s because it is the time the change in velocity occurred.

$a = \frac{vf-vi}{t}$
$a = \frac{0m/s-16.0m/s}{2.0s}$
$a = \frac{-16.0m/s}{2.0s}$
$a=-8.0m/ s^{2}$

Now that we have acceleration, we can now solve for the Force. Again Force is the product of mass and acceleration.

F=ma

$F=(0.25kg)(-8.0m/ s^{2} )$
$F=-2kg.m/ s^{2} )$ or -2N

The force is -2N. Now if you are looking for the magnitude of the force then you can just put 2N.

The negative sign indicates the direction of the force, if it is negative this means that the force applied was in the opposite direction.

Answer from: Quest

Is a vector quantity that refers to "the rate at which an object changes its position." imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. while this might result in a frenzy of activity, it would result in a zero velocity. because the person always returns to the original position, the motion would never result in a change in position. since velocity is defined as the rate at which the position changes, this motion results in zero velocity. if a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. every step must go into moving that person further from where he or she started. for certain, the person should never change directions and begin to return to the starting position.

Answer from: Quest

Sorry i don’t know what to do

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Jeremy accidently dropped his toy stuffed animal from the balcony of his apartment on the fourth flo...