Vector Addition

when graphically adding vectors in two dimensions, each vector arrow begins at the origin and proceeds in the direction of the vector for a distance proportional to the magnitude of the vector.

• true

• false

Tags

NGSS.HS-PS3-5

determine the magnitude due to the sum of the two vectors below

• 3

• -8

• -5

• 0

when performing one-dimensional graphical vector addition on two vectors, what is the proper starting position for each of the two arrows representing the two forces being combined?

• both arrow should start at the origin, zero on the number line, and point in the same direction.

• both arrow should start at the point on the number line equal to their magnitudes, and point in opposite directions.

• one arrow should start at zero on the number line, pointing to the right if positive and left if negative. the other arrow should start at zero on the number line and point in the opposite direction.

• one arrow should start at zero on the number line, pointing to the right if positive and left if negative. the other arrow should start at the end of the first arrow and point to the right if positive and left if negative

the difference between a scalar and a vector is that vector has

• different unit

• different magnitude

• direction

• all of these

the vector values are 4.0km due east and 3.0km due north. the resultant vector is 5.0km long and 37⁰ north of east. this value shows what type of triangle?

• acute triangle

• obtuse triangle

• isosceles triangle

• right triangle

a boy walked 22m East, then 43m West, and then 3 m East. what is the sum of boys motion?

• 26m West

• 68m East

• 18m West

• 24m East

a person walked 30.0m east and then 100.0m north. add these two vectors to get the magnitude of the vector sum of the two movements.

• 108.6m

• 104.4m

• 130m

• 70m

determine the magnitude due to the sum of the two vectors below.

• 10

• -3

• 7

• 3

in the following image, vector A and B represent the two displacements of a person who walked 75.0m east and then 30.0m north. we want to add these two vectors to get the vector sum of the two movements

• 105m at 21.8^o north of east

• 105m at 68.2^o north of east

• 80.8m at 21.8^o north of east

• 80.8m at 68.2^o north of east

the diagram shows an incomplete scale drawing to find the resultant of two 10N forces acting at apoint in the directions shown. what os the magnitude of the resultant force

• 7.5N

• 8.6N

• 18N

• 20N

Tags

NGSS.HS-PS2-1