Which quantity may be calculated directly using Newton’s second law of motion?
2 answers:
a. weight
Explanation:
Newton's second law of motion states that:
where
F is the force acting on an object
m is the mass of the object
a is the acceleration of the object
If we take an object and we want to measure its weight, we can directly use this formula. In fact, the weight of an object is just equal to the force of gravity acting on the object, which is F in the previous formula. The acceleration, in this case, is g, the acceleration due to gravity, so the formula becomes
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Answer:
the Power required is 300 W
Explanation:
We know that the definition of work is given by the following expresion:
the distance is 1.5 meters and the Force is equal to 1000 N.
Replacing this values in the work expresion
And the power is equal to the amount of work done in a given time, therefore we have:
Time in seconds