Bohr, he invented the Bohr model which is the basis for the beginning of quantum physics.
Answer:
Bar graph
Explanation:
each day collects data so a bar graph would work.
The answer they are looking for is the last one. However the last two are technically correct but the third one would result in negative work.
Answer:
True
Explanation:
In this particular case, the area of the graph represents the impulse.
In fact, impulse is defined as the change in momentum of an object:

Moreover, impulse is also defined as the product between the magnitude of the force acting on an object and the duration of the collision:

If we plot a graph of the force versus the time, if the force is constant then this graph will have a rectangular shape, and the area under the graph will simply be the product

which corresponds to the definition of impulse.