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CH-8 MOTION
Describe the motion in this graph
What is motion?
CH-8 MOTION
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1
What is motion?
A diploid that will move when touched.
An objects change in position relative to a reference point.
Anything that changes the state of rest of an object.
F=a/m
2
Describe the motion in this graph
Moving at constant speed
Speeding up
Slowing down
3
Which section of the line on the graph represents uniform positive velocity?
Section C
Section A
Section B
Section D
4
Define "motion".
The laws of physics that involve movment
What ever Mr. Wittmer says it is
Newtons laws that refer to "motion"
the action or process of moving or being moved.
5
Describe the motion in this graph
Moving at constant speed
Speeding up
Slowing down
6
What does the graph show in relation to speed?
increasing speed
no change in speed
decreasing speed
constant speed
7
Which graph shows uniform velocity?
B
D
C
A
8
What is the difference between VELOCITY and SPEED?
Speed is only directions
Speed takes into account gravity and mass
Velocity is how fast an object moves
Velocity is speed and direction
9
Define displacement.
The distance travelled
The distance travelled from start to finish x2
The increase of speed over a certain time
The distance between the start and the finish point
10
A body at rest or moving with uniform velocity will have an acceleration of ....
none of the above
1 m/s2
100 m/s2
0
11
An object is moving a uniform velocity. What is its acceleration?
zero
uniform
non uniform
negative
12
In this graph, describe the motion
the object is not moving
The object is moving
The object is accelerating
13
Which of the following is
an example of linear motion?
A somersault from a diving board
50m swimming race
A cartwheel
400m sprint
14
If acceleration and velocity are both negative,
the object is speeding up
the object is slowing down
none of the above
the object is heading due east
15
A car moves at a constant velocity. The car's speed is changing.
false
true
16
Define Acceleration
The rate at which velocity DOESN'T change with time
The rate of speed
The rate at which only vector changes
The rate at which velocity changes with time
17
Define "speed".
distance traveled
the distance traveled divided by the time during motion
fastness
how long it takes to get from point A to point B
18
Acceleration
30 m/s
10 m/s
10 m/s2
30 m/s2
19
the units of acceleration are...
meters/second
distance/time2
distance/time
meters/second2
20
In uniform circular motion, the direction of the linear velocity is along the
Tangent to the curve path
Radius vector towards the centre
Radius vector
Perpendicular to the plane of the circular motion
