Answer:
B. A water wheel in a dry river
Step-by-step explanation:
Work is said to be done when a force moves a body or an object through a certain distance in the direction of the force. Thus for work to be done, force and distance are required.
i.e Work done = Force x distance
It is measured in Joules.
Also, the work done by an object could be a measured of potential energy.
So that,
Work done = potential energy = mass x gravitational force x height
Considering the collage in the question, since the water wheel is in a dry river no work is done. Water wheel is a device that functions through the flow of water body, thus causing its rotation.
Answer:
y = 5/4x -7
Step-by-step explanation:
y = mx + b
parallel line has same slope: 5/4
y = 5/4x + b
(4 , -2) -2 = 5/4 x 4 + b
b = -7
Formula: y = 5/4x -7
Answer:
Step-by-step explanation:
Answer:
1.2 hours equal to 30mph
Step-by-step explanation:
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