Trevor (PHYSICS)

What is the definition of a vector?

• A quantity having direction as well as magnitude, especially as determining the position of one point in space relative to another.
• A quantity having only magnitude, not direction.
• A physical quantity that can be described by a single element of a number.
• A mathematical quantity with both direction and magnitude, but not position.

What is the result of adding two vectors in the same direction?

• The result is a vector in the opposite direction
• The result is a vector in a perpendicular direction
• The result is a vector in the same direction with a magnitude equal to the sum of the magnitudes of the two vectors
• The result is a vector in the same direction with a magnitude equal to the difference of the magnitudes of the two vectors

What is the result of subtracting two vectors in opposite directions?

• The result is a vector with magnitude equal to the sum of the magnitudes of the two vectors and direction same as the larger vector
• The result is a vector with magnitude equal to the difference of the magnitudes of the two vectors and direction opposite to the larger vector
• The result is a vector with magnitude equal to the sum of the magnitudes of the two vectors and direction opposite to the larger vector
• The result is a vector with magnitude equal to the difference of the magnitudes of the two vectors and direction same as the larger vector

What is the result of adding two vectors at right angles to each other?

• The result is a vector with magnitude equal to the sum of the magnitudes of the two vectors
• The result is a vector with magnitude equal to the difference of the magnitudes of the two vectors
• The result is a vector with direction equal to the sum of the directions of the two vectors
• The result is a vector with magnitude equal to the square root of the sum of the squares of the magnitudes of the two vectors

Which of the following is an example of a vector quantity?

• Temperature
• Mass
• Speed
• Velocity

Which of the following is an example of a scalar quantity?

• Force
• Velocity
• Acceleration
• Temperature

A 3.0 newton force and a 4.0 newton force act concurrently on a point. In which diagram shown would the orientation of these forces produce the greatest net force on the point?

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Two concurrent forces have a maximum resultant of 45 Newtons and a minimum resultant of 5.0 Newtons. What is the magnitude of each of these forces?

• 0.0 N and 45 N

• 5.0 N and 9.0 N

• 20 N and 25 N

• 0.0 N and 50 N

The magnitude of the resultant is equal to......

• 2500m

• 800m

• 50m

• 70m

The president’s airplane, Air Force One, flies at 250 m/s to the east with respect to the air. The air is moving at 35 m/s to the north with respect to the ground. Find the velocity of Air Force One with respect to the ground.

• 252 m/s
• 222 m/s
• 435 m/s
• 125 m/s