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nika2105 [10]
3 years ago
11

A car travels 2.5 hours in a northernly direction for 300 km. determine the cars speed and velocity.

Physics
1 answer:
wolverine [178]3 years ago
5 0

Answer:

Speed= 120 km/h

Velocity= 120 Km/h North

Explanation:

Time= 2.5 hours

Distance= 300 Km

Direction= North

Speed= distance/speed

Velocity= speed and direction

Substituting 300 km for speed and 2.5 hours for time then speed= 300/2.5= 120 km/h

The velocity= 120 km/h North

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A model used for the yield y of an agricultural crop as a function of the nitrogen level n in the soil (measured in appropriate
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<span>The maxima of an equation can be obtained by taking the 1st derivative of the equation then equate it to 0.</span>The value of N that result in best yield is when dy/dn = 0.

Taking the 1st derivative of the equation y=(kn)/(9+n^2) :<span>
</span>

By using the quotient rule the form of the equation is:<span>
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<span>Equate dy/dn = 0, then solve for n 
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