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MakcuM [25]
4 years ago
14

Running longer would be an example of how you might improve your running performance

Physics
1 answer:
AURORKA [14]4 years ago
8 0
This is true, however if it wee better worded it would be obvious. This is simply stating that you have a higher endurance which would be a visual improvement in your running performance. Hope this helped <3
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Does a North magnet and south magnet repel or attract?
NNADVOKAT [17]

Answer:

A north magnet attracts a south magnet

Explanation:

The opposite polar magnetic field will attract each other while the same polar magnetic fields will repel each other.

5 0
3 years ago
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A soccer goal is 2.44 m high. A player kicks the ball at a distance 13 m from the goal at an angle of 40°, and the ball just hit
Vera_Pavlovna [14]

Let <em>v</em> denote the initial speed of the ball. The ball's position at time <em>t</em> is given by the vector

\mathbf r(t)=v\cos40^\circ\,t\,\mathbf i+\left(v\sin40^\circ\,t-\dfrac g2t^2\right)\,\mathbf j

where <em>g</em> is the acceleration due to gravity with magnitude 9.80 m/s^2.

The ball reaches the goal 13 m away at time <em>t</em> such that

10\,\mathrm m=v\cos40^\circ t\implies t=\dfrac{10\,\mathrm m}{v\cos40^\circ}

at which point it attains a height of 2.44 m, so that

2.44\,\mathrm m=v\sin40^\circ\left(\dfrac{10\,\mathrm m}{v\cos40^\circ}\right)-\dfrac g2\left(\dfrac{10\,\mathrm m}{v\cos40^\circ}\right)^2

2.44\,\mathrm m=(10\,\mathrm m)\tan40^\circ-\dfrac12\left(9.80\dfrac{\rm m}{\mathrm s^2}\right)\left(\dfrac{100\,\mathrm m^2}{v^2\cos^240^\circ}\right)

\implies\boxed{v\approx3.75\dfrac{\rm m}{\rm s}}

6 0
4 years ago
Which position represents spring in the northern hemisphere
andrey2020 [161]

Position D represents spring for the southern hemisphere. This can be determined because position C is winter This can be determined because position C is winter (the tilt is away from the sun ) and spring follows winter.

5 0
3 years ago
Two water jets are emerging from a vessel at a height of 50 centimeters and 100 centimeters. If their horizontal velocities at t
IrinaK [193]
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In which t = times for the vertical movement
h = height
g= gravity (we use standardized measurement of 9.8)

d1 = 1*0.319 = 0.319 m 
d2 = 0.5*0.451 = 0.225 m 

in which d = Horizontal distance

ratio
= di : d2
= 0.319 : 0.225    

 = 3.19 : 2.25
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3 years ago
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Why weigh is not constant planet to planet?
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Gravitational pull changes between each planet while its the "MASS" which doesnt change
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