Unit 1, Ch 1 Practice MC Questions

Question 1

True or False:

A vector quantity is described with a direction and a scalar is not

Answer 1

true

Question 2

True or False:

The velocity of an object refers to the rate at which the object’s position changes

Answer 2

true

Question 3

True or False:

Accelerating objects MUST be changing their speed

Answer 3

false

(they can also be changing direction)

Question 4

True or False:

An object experiencing uniform motion is accelerating

Answer 4

false

(objects in uniform motion have the same speed and direction)

Question 5

Can an object have a northward velocity while experiencing a southward acceleration?

Answer 5

Yes, because it means the object is slowing down.

(This happens when a moving car driving north applies brakes and slows down)

Question 6

On a position-time graph, a horizontal line means

Answer 6

no movement

Question 7

On a position-time graph, a straight diagonal line means

Answer 7

constant velocity

Question 8

On a position-time graph, a curved line means

Answer 8

accelerating

Question 9

On a position-time graph, a gradually sloped line means

Answer 9

moving slowly

Question 10

On a position-time graph, a steeply sloped line means

Answer 10

moving fast

Question 11

On a velocity-time graph, a horizontal line means

Answer 11

constant velocity

Question 12

On a velocity-time graph, a straight diagonal line means

Answer 12

accelerating

Question 13

On a velocity-time graph, a gradually sloped line means

Answer 13

small acceleration

Question 14

On a velocity-time graph, a steeply sloped line means

Answer 14

big acceleration

Question 15

Which of the following is the term for the line an
object moves along from a particular starting point?

(a) motion
(b) distance
(c) position
(d) direction

Answer 15

(d) direction

Question 16

true or false

Position is the distance of an object from a particular reference point

Answer 16

false

position is the distance and direction of an object from a particular reference point

Question 17

The slope of a velocity–time graph gives the
___________ of the object

Answer 17

acceleration

Question 18

The area under an acceleration–time graph represents the _________

Answer 18

change in velocity of an object

Question 19

terminal velocity

Answer 19

Terminal velocity results from air resistance that
exerts a force on a falling object that is equal to the
force of gravity

Question 20

8. For the position–time graph of an object moving in one dimension, which of the following properties would imply that the object has motion with nonuniform velocity?
   (a) The graph is a straight line with a slope of 3.
   (b) The graph is a curve.
   (c) The graph is a horizontal line.
   (d) The graph is a negative line

Answer 20

(b) The graph is a curve.

Question 21

the slope of a velocity–time graph will give you ________

Answer 21

acceleration

Question 22

true or false

an object that’s dropped experiences an acceleration downward of 9.8m/s2 (down)

Answer 22

true

Question 23

3m/s (east) is the same as

Answer 23

-3m/s (west)

Question 24

instantaneous velocity is found by finding the tangent line on a

Answer 24

pt graph

Question 25

0.0000561 in scientific notation

Answer 25

5.61 x 10^-5

Question 26

uniform motion means

Answer 26

constant velocity

Question 27

a quantity that has both a magnitude and a direction

Answer 27

vector quantity

Question 28

movement at a constant velocity in a straight line

Answer 28

uniform motion

Question 29

represented by the letter g

Answer 29

acceleration due to gravity

Question 30

when a free-falling object reaches a constant velocity

Answer 30

terminal velocity

Question 31

movement where there is either a change in direction or an acceleration

Answer 31

non-uniform motion

Question 32

is it possible for an object with a negative acceleration to be speeding up?

Answer 32

-yes depends on if the velocity is negative as well

-if velocity and acceleration are the same sign/direction, object will speed up

-if velocity and acceleration are different signs/directions, object will slow down