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4 years ago

What is a cool example of newtons 3rd law?

2 answers:

5 0

Newton's 3rd law is "For every action, there is an equal and opposite reaction"

a "cool" example to describe this might be how fish swim or the impact from someone throwing a football.

USPshnik [31]4 years ago

4 0

This law means that when one object exerts force on another, the same amount of force is exerted on the initial object, but in the opposite reaction. For example, when a billiard ball strikes another ball, the second ball is propelled forward. Simultaneously, the momentum of the first ball is slowed or stopped by opposing force. The amount that the first object is affected by the opposing force depends on the mass and motion of the second object.

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Stand on a bathroom scale on a level floor, and the reading on the scale shows the gravitational force on you, mg. If the floor

kari74 [83]

Answer:

The angle introduces an error on the mesure of the weight

Explanation:

Weight and Normal Forces

When an object is resting on a horizontal surface, its weight is directed downwards and the normal force has the same magnitude and opposite direction, i.e. directed upwards. When some angle α exists between the surface and the horizontal plane, the scale keeps 'feeling' the Normal force, but it's not equal to the weight anymore, but to the perpendicular component of the weight to the surface where the scale is placed. It can be found that the component of the weight is m.g.cosα

If, for example $\alpha=10^o$ , the real measure is

$m.g.cos 10^o=0.985(mg)$

That is, 98.5% of the correct weight. So it's important to measure weight on horizontal surfaces

7 0

4 years ago

Two loudspeakers are about 10 m apart in the front of a large classroom. if either speaker plays a pure tone at a single frequen

Ronch [10]

The observed differences in amplitudes are due to interference between the sound waves. The decrease in amplitude is due to destructive interference of the waves and the increase in amplitude is due to constructive interference.

5 0

4 years ago

Read 2 more answers

An object moving at a constant velocity will always have a

SVETLANKA909090 [29]

Answer:

It will always have a zero acceleration

8 0

3 years ago

Read 2 more answers

Assuming you are in the Northern Hemisphere, how would you expect the location of the Sun in your local sky at noon to differ fr

topjm [15]

Answer:

It should be higher during the summer.

Explanation:

Assuming that youlive in the Northern Hemisphere, the sun's location through the season from winter to summer at noon, should be different. The sun would be observed at a higher position over the horizon in the summer season than it is in the winter season. The reasons are equinoxes, solstices and the ecliptic circle.

I hope this answer helps.

3 0

3 years ago

A student walks 3

pochemuha

Answer: The speed of the student is 5.45km/hr.

Explanation: The important concept here is to convert 33 minutes to hours by diving by 60 since one hour is equal to 60 minutes to get 0.55hr

Then velocity is equal to distance over time.

v=d/t

v= 3km/0.55hr

v=5.45km/hr

8 0

3 years ago