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JulsSmile [24]
3 years ago
8

Complete the blanks and tell the reaction force

Physics
1 answer:
olasank [31]3 years ago
5 0

1  ====>  Your answers would be, Newton’s third law says that every time there is an <u>ACTION </u>force, there is also a <u>REACTION </u>force that is<u> EQUAL</u> in size and acts in the <u>OPPOSITE</u> direction.


2 =====> Newton’s third law states that forces must ALWAYS occur in <u>PAIRS.</u>



3  ===>  Action forces ====> <u>Tell the REACTION force.</u>

A. Your bottom pushing on your desk seat:  <u>SEAT PUSHING UP ON YOUR BOTTOM.</u>


B. A bat hitting a baseball:  <u>BASEBALL HITTING THE BAT.</u>


C. Your finger pressing on your phone screen while texting: <u>PHONE SCREEN PUSHING BACK ON YOUR FINGER.</u>




Hope that  helps!!!!                                     : )



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Which runner has greater kinetic energy: a 45 kg runner moving at a speed of 7 m per second or a 93 kg runner moving at a
bagirrra123 [75]

Kinetic Energy = (1/2) (mass) (speed)

First runner:  KE = (1/2) (45kg) (49 m/s)  =  1,102.5 Joules  

Second runner:  KE = (1/2) (93kg) (9 m/s)  =  418.5 Joules

The <em>first runner </em><em>has 163</em>% more kinetic energy than the second runner has.

7 0
2 years ago
A hammer slides down a roof that makes a 30.0°angle with the horizontal. What are the magnitudes of the components of the hammer
dlinn [17]
<h2>Answer:7.14ms^{-1},4.125ms^{-1}</h2>

Explanation:

Whenever an object is moving in a 2D frame,its motion can be analysed as if it is travelling in two independent 1D frames.

One of such independent 1D frames are along horizontal and another along vertical.

Let v be the total velocity.

Given that,v=8.25ms^{-1}

We call the horizontal velocity as v_{h} and the vertical velocity as v_{v}.

v_{h}=vCos\alpha

v_{v}=vSin\alpha

where \alpha is the angle between the object and horizontal.

It is given that \alpha =30^{0}

v_{h}=8.25\times Cos(30^{0})=7.14ms^{-1}

v_{v}=8.25\times Sin(30^{0})=4.125ms^{-1}

7 0
3 years ago
A horizontal force of 400.0 N is required to pull a 1760 N truck across the floor at a constant speed. Find the coefficient of s
Tomtit [17]

Data given:

Fh=400N

Ftruck=1760N

Data needed:

u=?

Formula needed:

Fh=Ftruck×u

Solution:

u=Fh/Ftruck

u=400N/1760N

u=0,227272727

4 0
2 years ago
How is sound is different from music how loundness od sound mention some ways to reduce
kondor19780726 [428]

not too sure on this one maybe to locate objects under water, to diagnose problems, to treat medical ailments

3 0
2 years ago
Based on its location on the periodic table, which metal is likely to be less reactive than both strontium and sodium?
QveST [7]

Answer:

Magnesium is the correct answer

Explanation:

It is magnesium because as we move down the periodic table group, atomic sizes increase which is as a result of lesser forces of attraction between nucleus and valence of an atom which makes the atom to be prone to leave as electrons so easily, elements become more reactive.

But as we move along the period , atomic sizes decrease because there is a more force of attraction between nucleus of an atom and it valence electrons making it less reactive just as the case in magnesium. Other elements are more reactive than it across the group.

6 0
2 years ago
Read 2 more answers
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