The work done is 200 J
Explanation:
The work done by a force applied to move an object is given by:
where
F is the magnitude of the force
d is the displacement of the object
is the angle between the direction of the force and of the displacement
In this problem, assuming that the force applied by the workers is parallel to the direction of motion of the crate, we have:
F = 10.0 N
d = 20.0 m
Therefore, the work done is:
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540 centigram is 0.054 hectograms
Answer:
120 kg.m/s
Explanation:
Momentum, p is given by the formula p=mv where m represent the mass of object in kgs while v is the velocity of the same object in m/s with direction aspect considered. In this case, the mass is given as 12 kg while velocity is 10 m/s hence momentum exerted will be 12*10= 120 kg.m/s
The answer is the third one down. New evidence may contradict the old evidence of a certain theory.