A 1,000 kg car has 50,000 joules of kinetic energy. What is it’s speed
2 answers:
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Answer:
The acceleration is
Explanation:
Given the velocity function:
you can obtain the instantaneous acceleration "a" as its first derivative:
To determine the value of "a" when the velocity was 12m/s, you need to figure out the value for "t" when this happens. At what time t is the velocity 12m/s?
This value of t is less than the 5 seconds mentioned in the text - so that is a good sign that the formula is valid for this value. And so you can use t=3.47s in the derivative (acceleration) above:
So, If the resistance decreases, then the current increases. Assume voltage is constant.
If the voltage increases, then the current increases. Assume resistance is constant.
Explanation:
According to the ohm's law; I = V/R;
- If the resistance decreases the current increases assuming that the voltage is constant
- if the voltage increases, then the current increases assuming that the resistance is constant.
Based on Ohm's law, we know that the current through a metallic conductor is directly proportional to the voltage across the ends.
From the relationship;
I =
we see that V = IR
These equations affirms that
- If the resistance decreases the current increases assuming that the voltage is constant based on the second equation
- if the voltage increases, then the current increases assuming that the resistance is constant based on the first equation.
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Electric circuit brainly.com/question/10421964
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