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iren2701 [21]
3 years ago
13

What is the change in its velocity, v, during this 0.80-s interval?

Physics
1 answer:
lyudmila [28]3 years ago
7 0
This link should help you out https://quizlet.com/40330134/biomechanics-questions-flash-cards/
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Which of the following would most likely be an example of a mass-transit disaster?
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i think it is c if not im sorry if im wrong

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How long does it take a car traveling at 50 mph to travel 75 miles? Use one of the following to find the answer.
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1.5 hours

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The velocity at the midway point of a ball able to reach a height y when thrown with velocity vi at the origin is:
Nutka1998 [239]
Assuming the ball follows classical 2D projectile motion (moves in a parabola) and that the height y = the maximum height the ball goes in the y direction (because this would be its midpoint), then the velocity at height y is equal to the initial x component of velocity. At the midpoint, the y component is zero, so the velocity only depends on the x component. Projectiles move at constant speed in the x direction, so X = Xo. As long as you know actual values for Vi and either the initial angle or one initial component, then you can solve for Xo using trigonometry. Xo is thus the velocity of the ball once it has reached its maximum height. 
7 0
3 years ago
you measured the torque caused by the gyroscope's weight by lifting up the end of the gyroscope (at 7.5 inches). If you measured
DIA [1.3K]

Answer:

i) No, the spring scale does not read a different value

ii) The torque will read a different value, it will reduce

iii) The spring scale does not need to be measured at the center of mass location.

Explanation:

The torque caused by the gyroscope can be given by the relation,

\tau = r × f

\tau = rf cos \theta

The torque measured by the gyroscope varies directly with the distance, r.

A decrease in the distance r will also cause a decrease in the value of the torque measured. When the distance, r is reduced from 7.5 inches to 5 inches, the torque caused by the gyroscope's weight also reduces.

The weight of the gyroscope remains constant despite the reduction in the distance because the weight  of the gyroscope is not a function of the distance from the gyroscope. Therefore, the spring scale will not read a different value.

Yes, the spring scale does not need to be measured from the center of mass location because the weight does not depend on the location of measurement. The reading of the sprig scale remains constant.

3 0
3 years ago
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