PreCalc 8.1 Intro to Vectors

State whether the quantity is a vector quantity or scalar quantity.

a box being pushed with a force of 125 newtons

• Vector

• Scalar

State whether the quantity is a vector quantity or scalar quantity.

a deer running 15 meters per second due west.

• Vector

• Scalar

State whether the quantity is a vector quantity or scalar quantity.

a rock thrown straight up at a velocity of 50 feet per second

• Vector

• Scalar

State whether the quantity is a vector quantity or scalar quantity.

a ball thrown with a speed of 85 miles per hour

• Vector

• Scalar

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Determine the magnitude and direction of the resultant.

18 newtons (N) directly forward and then 20 newtons directly backward.

• 2 N backward

• 38 N forward

• -2 N backward

• 38 N backward

Determine the magnitude and direction of the resultant.

100 meters due north and then 350 meters due south.

• 350m due southeast

• 450m due northwest

• 250m due south

• -250m

Determine the magnitude and direction of the resultant.

17 miles east and then 16 miles south