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Lunna [17]
2 years ago
14

Define scalar and vector

Physics
1 answer:
Andreas93 [3]2 years ago
7 0

The quantity is either a vector or a scalar. These two categories can be distinguished from one another by their distinct definitions: Scalars are quantities that are fully described by a magnitude (or numerical value) alone. Vectors are quantities that are fully described by both a magnitude and a direction.

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Will the velocity of the book change as it moves across the surface with NO friction? Explain your answer.
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No velocity will not be changed

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One end of a 34-m unstretchable rope is tied to a tree; the other end is tied to a car stuck in the mud. The motorist pulls side
anyanavicka [17]

Answer:

Fc = 89.67N

Explanation:

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From the attached diagram, you can see that we can calculate the new separation distance from the tree and the stucked car H as follows:

L1+L2=34m

L1^2=L2^2=L^2=2^2+(H/2)^2  Replacing this value in the previous equation:

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We can now, calculate the angle between L1 and the 2m segment:

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If we make a sum of forces in the midpoint of the rope we get:

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Solving for T, we get the tension on the rope which is equal to the force exerted on the car:

T=Fc=\frac{F}{2*cos(\alpha) } = 89.67N

7 0
3 years ago
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