VECTORS AND SCALARS QUANTITIES

1.

Multiple Choice

1 min

1 pt

A car travels 90 meters due north in 15 seconds. Then the car turns around and travels 40 meters due south. What is the magnitude and direction of the car's resultant displacement?

40 metres, South

50 metres, South

50 metres, North

40 metres, North

2.

Multiple Choice

1 min

12 pts

Which statement describes a vector?

It has magnitude but no direction

It has direction but no magnitude

It has both direction and magnitude

It has constant magnitude but no
direction

3.

Multiple Choice

1 min

1 pt

Is this a scalar quantity or a vector quantity?
Wind blowing at 20 knots

Scalar

Vector

4.

Multiple Choice

1 min

1 pt

Is this a scalar quantity or a vector quantity?
A deer running 15 meters per second due west

Scalar

Vector

5.

Multiple Choice

1 min

1 pt

If a boomerang is thrown 20 m in a straight line and returns exactly to the spot it was thrown what is its displacement?

20m

40m

0m

-20m

6.

Multiple Choice

1 min

1 pt

Which of these is not a vector quantity?

displacement

time

velocity

acceleration

7.

Multiple Choice

1 min

1 pt

Which of the following quantities are vectors?

speed, velocity, acceleration

velocity, acceleration, force

force, acceleration, mass

length, mass, time

8.

Multiple Choice

1 min

1 pt

The _______ of two or more vectors is the sum of the vectors.

components

scalar

resultant

magnitude

9.

Multiple Choice

1 min

1 pt

What is the net force?
100 N 230 N
<------ --------->

30 N to the right

230 N to the right

130 N to the right

This is a balanced force

10.

Multiple Choice

1 min

1 pt

What is the SI unit of measurement for force?

lbf

Kilograms

Newtons

m/sec^2

11.

Multiple Choice

1 min

1 pt

What is the x component of the vector given in the diagram?

77N

92N

120N

60N

12.

Multiple Choice

1 min

1 pt

What is the y component of the vector given in the diagram?

77N

92N

120N

60N

13.

Multiple Choice

1 min

1 pt

A vector is a mathematical structure that has both _______ and _______.

direction, magnitude

scope, sequence

meat, potatoes

scalar, vector

14.

Multiple Choice

1 min

1 pt

Which statement describes a vector?

It has magnitude but no direction

It has direction but no magnitude

It has both direction and magnitude

It has constant magnitude but no
direction

15.

Multiple Choice

1 min

1 pt

A car moved 60 km East and 90 km West. What is the displacement and the direction?

30 km, West

60 km. East

90 km

150 km

16.

Multiple Choice

1 min

1 pt

An airplane traveling north at 220 meters per second encounters a 50.0-meters-per-second crosswind from west to east.

170 m/s

214 m/s

226 m/s

270 m/s

17.

Multiple Choice

1 min

1 pt

The _______ of two or more vectors is the sum of the vectors.

components

scalar

resultant

magnitude

18.

Multiple Choice

1 min

1 pt

What is the magnitude of the resultant?

900 Newtons

0 Newtons

450 Newtons

636.40 Newtons

19.

Multiple Choice

1 min

1 pt

What is the magnitude of the resultant?

17.03 m

70 m

30 m

55.60 m

20.

Multiple Choice

1 min

1 pt

Ms. HK and Ms. Walton were both pushing a car south. Ms. HK pushed with 400 N and Ms. Walton pushed with 500 N. What was their resultant?

640.31 N south

100 N south

900 N south

410000 N south

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