Scalars and Vectors | Physics - 12th Grade

The speedometer on your car measures___.

• average speed.

• average velocity.

• instantaneous speed.

• instantaneous velocity.

Which of the following map directions is equivalent to the Cartesian 180°?

• 000T

• 090T

• 270T

• 360T

The resultant is the arithmetic sum of the magnitudes only if

• the vectors are in the same direction.

• the vectors are in opposite directions.

• one vector is perpendicular to the other.

• the magnitudes of the vectors are the same.

Which is not necessarily true about similar triangles?

• Their corresponding sides are proportional.

• Their angles are sufficient to determine similarity.

• Their corresponding sides are congruent.

• Their corresponding angles are congruent.

Find the resultant of a vector whose component vectors are +5.50 m vertically and +9.50 m horizontally. Use an order-of-magnitude estimation to choose the correct answer.

• 11 m

• 3.87 m

• 15 m

• 4 m

If the length of one leg of a right triangle is 4.5 m and the length of the hypotenuse is 10.2 m , what is the length of the other leg?

• 2.39 m

• 9.15 m

• 5.7 m

• 14.7 m

If a vector's reference angle is 45° and it lies in the third quadrant, what is the vector angle?

• q = 45°

• q = 135°

• q = 225°

• q = 315°

The study of the causes of motion is called ___.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS2-4

A physical quantity that has both a _____ and a ______ associated with it is called vector quantity.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Map directions are measured from ______.