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2 years ago

A student carries a backpack for one mile. Another student carries the same backpack for two miles

Physics

1 answer:

Svetllana [295]2 years ago

3 0

Answer:

Compared to the first student, the second student did twice as much work as the first student.

Explanation:

The work done by the first student will be equal to the Force exerted by the backpack on the student carrying it multiplied by one mile (Distance). The work done by the second student will be equal to the Force exerted by the backpack on the student carrying it multiplied by two miles (Distance).

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kirill [66]

Answer:

See the graph attached with the vectors.

Explanation:

The exercise is to draw the corresponding vectors:

$2\vec a\\\\3\vec c\\\\3\vec d\\\\3\vec f\\\\2\vec b$

Every one is the multiplication of a scalar by a vector.

The result of multiplying a scalar by a vector is a vector with the same direction of the original vector enlarged in a factor equal to the scalar magntitude.

Thus, in a graph the resulting vector is represented with a parallel arrow and pointing in the same direction as the original vector but with a length equal to the original length multiplied by the magnitude of the scalar.

For instance, the vector $2\vec a$ is represented with an arrow in the same direction of $\vec a$ and with twice its length.

The figure attached contains the five requested vectors using the procedure explained above.

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2 years ago

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Nataly [62]

Explanation:

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m denotes mass
v denotes velocity

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Option D is correct.

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Leviafan [203]

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san4es73 [151]

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3 years ago

A car travels a distance of 320 km in 4 hours. What is your average speed in meters per second?

Andreas93 [3]

Answer:

22.2 m/s

Explanation:

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3 years ago