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3 years ago

What is newtons first,second, and third law?

1 answer:

6 0

Newton's first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.

Newton's second law of motion pertains to the behavior of objects for which all existing forces are not balanced. .

Newton's third law: All forces in the universe occur in equal but oppositely directed pairs.

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Sally Leadfoot was pulled over on her way from Syracuse to Ithaca by an officer claiming she was speeding. The speed limit is 65

Citrus2011 [14]

Sally's average speed is <u>35.3 mi/h.</u>

Average speed of a body is the total distance traveled in the given time interval.

Express the distance d traveled in miles.

$d=\frac{97 km}{1.6 km/m\\i} \\ = 60 mi$

Express the time t traveled in hours.

$t =\frac{102 min}{60 min/hr}\\ = 1.7 h$

Calculate the average speed v.

$v =\frac{d}{t} \\ =\frac{60 mi}{1.7h} \\ = 35.3 mi/h$

Her average speed is 35.3 mi/h, which is less than the speed limit of 65 mi/h.

However, the average speed of an object is different from its instantaneous speed. It could be possible that at the time when the officer apprehended her, Sally could have been travelling at a speed greater than the prescribed speed limit, which would have prompted the officer to issue a speeding ticket to her.

Thus, the average speed of a person cannot be considered as a bench mark for speeding offences, since her instantaneous speed could have been higher than the speeding limit and yet she could have had an average speed less than the speeding limit.

3 0

4 years ago

The drawings show three examples of the force with which someone pushes against a vertical wall. In each case the magnitude of t

Monica [59]

Complete Question

The complete question is shown on the

Answer:

The ascending order would be 2nd < 1st < 3rd

Explanation:

Generally the the Normal force is mathematically represented as

$Normal \ Force = Fsin \theta$

=> $Normal \ Force \ \alpha \ sin \theta$

For the first drawing the value $\theta$ is between that of the the second and the third drawing so the Normal force would also be between the normal forces of the second and the third drawing

For the second drawing whose value of $\theta$ is less than that of the first and the third the normal force would also be less than that of the first and third

For the the third drawing whose value is (90°) which is higher than the first and the second the normal force would also be higher than the first and the second

4 0

3 years ago

Read 2 more answers

Do this work if someone give correct answer I make her brainliest do this worksheet please

ArbitrLikvidat [17]

Sry,I only know the answer of q2

Chlorine is a non metal because it is bad conductor of heat and sodium is a metal because it is good conductor of heat.

The 3 ways in which metal is different from non metal are given below:

1)metal are good conductor of heat but nonmetal are bad conductor of heat.

2)metals are malleable but non metal aren't malleable.

3)metals are generally ductile but non metal aren't ductile.

Hope it will helpyou!

4 0

3 years ago

Read 2 more answers

Imagine that a hypothetical life form is discovered on our moon and transported to Earth. On a hot day, this life form begins to

almond37 [142]

Answer:

The heat of vaporization 580 cal/g times 602g = cal in human and do the same for life form.

Explanation:

4 0

4 years ago

What is the definition of permitted orbits ?

givi [52]

.The path of a celestial body or an artificial satellite as it revolves around another body due to their mutual gravitational <span>attraction.</span>

7 0

4 years ago