While getting buff at the gym you lift a bunch of weights applying 1000N of force to lift them from the ground to a height of 2m
1 answer:
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Answer: 294 N
Explanation:
Since the Normal Force is equal to the weight
of the dog, we have:
Where:
is the mass of the dog
is the acceleration due to gravity on the Earth's surface
Solving:
Answer:
The slope of a position-time graph can be calculated as:
where
is the increment in the y-variable
is the increment in the x-variable
We can verify that the slope of this graph is actually equal to the velocity. In fact:
corresponds to the change in position, so it is the displacement,
corresponds to the change in time
, so the time interval
Therefore the slope of the graph is equal to
which corresponds to the definition of velocity.