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Investigating Forces & Motion
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Investigating Forces and Motion (1998)(Granada Learning).iso
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topic2
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question.dat
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1998-02-10
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295 lines
[question1]
type:3
caption:\
A car is travelling at a constant speed on a straight road. Which \
graph shows how its displacement changes with time?<p>
correct:2g16b
wrong1:2g16a
wrong2:2g16c
wrong3:2g16d
feedback:\
For constant-speed motion in a straight line, displacement increases \
by equal amounts in equal time intervals. This produces a straight \
line graph with a constant slope.<p>
[question2]
type:1
image:2g17
caption:\
This graph shows how the velocity of a train increases as it pulls \
away from the station. What is the train's acceleration?<p>
correct:0.5 m/s<sup>2</sup>
wrong1:1.0 m/s<sup>2</sup>
wrong2:1.5 m/s<sup>2</sup>
wrong3:0.1 m/s<sup>2</sup>
feedback:\
You can calculate an object's acceleration by measuring the gradient \
of the line on its velocity time-graph. The train's velocity increases \
by 4.0 m/s in 8.0 s. Its acceleration is therefore equal to 4.0 ÷ \
8.0 = 0.5 m/s<sup>2</sup>.<p>
[question3]
type:1
image:2g18
caption:\
This graph shows the displacement against time for an object moving in \
a straight line. What is the best description of the object's \
motion?<p>
correct:constant negative velocity
wrong1:constant positive velocity
wrong2:positive acceleration
wrong3:negative acceleration
feedback:\
The graph shows that the object's displacement decreases by equal \
amounts in equal time intervals. It therefore has a constant negative \
velocity.<p>
[question4]
type:3
caption:\
Which of the graphs below shows an object with a uniform negative \
acceleration?<p>
correct:2g20a
wrong1:2g20b
wrong2:2g20c
wrong3:2g20d
feedback:\
The velocity of an object with uniform negative acceleration decreases \
by equal amounts in equal time intervals. The object's velocity-time \
graph is therefore a straight line with a negative gradient.<p>
[question5]
type:3
caption:\
Which of the graphs below shows an object moving with a constant \
velocity?<p>
correct:2g16b
wrong1:2g16a
wrong2:2g16c
wrong3:2g16d
feedback:\
The displacement of an object moving with a constant velocity \
increases by equal amounts in equal time intervals. The \
displacement-time graph is therefore a straight line with a positive \
gradient.<p>
[question6]
type:1
image:2g22
caption:\
This graph shows how the displacement of a moving object changes with \
time. What is its velocity?<p>
correct:2.0 m/s
wrong1:1.0 m/s
wrong2:3.0 m/s
wrong3:4.0 m/s
feedback:\
The object's velocity is the gradient of its displacement-time graph. \
The object's displacement increases by 4.0 m in 2.0 s. Its velocity is \
therefore equal to 4.0 ÷ 2.0 = 2.0 m/s.<p>
[question7]
type:1
image:2g23
caption:\
This graph shows how the velocity of a moving object changes with \
time. What is its acceleration?<p>
correct:4.0 m/s<sup>2</sup>
wrong1:3.0 m/s<sup>2</sup>
wrong2:2.0 m/s<sup>2</sup>
wrong3:1.0 m/s<sup>2</sup>
feedback:\
The object's acceleration is the gradient of its velocity-time graph. \
The object's velocity increases by 4.0 m/s in 1.0 s. Its acceleration \
is therefore equal to 4.0 ÷ 1.0 = 4.0 m/s<sup>2</sup>.<p>
[question8]
type:2
caption:To what is the gradient of a velocity-time graph equal?<p>
correct:acceleration
wrong1:displacement
wrong2:speed
wrong3:distance
feedback:The gradient of a velocity-time graph is equal to acceleration.<p>
[question9]
type:2
caption:To what is the gradient of a displacement-time graph equal?<p>
correct:velocity
wrong1:displacement
wrong2:acceleration
wrong3:distance
feedback:The gradient of a displacement-time graph is equal to velocity.<p>
[question10]
type:2
caption:\
A car is travelling at a constant positive velocity. A graph of its \
displacement against time will be:<p>
correct:a straight line with a constant positive gradient
wrong1:an upward curve
wrong2:a horizontal line
wrong3:a downward curve
feedback:\
The displacement-time graph for a car travelling at a constant \
positive velocity is a straight line with a constant positive \
gradient.<p>
[question11]
type:1
image:2g24
caption:\
This graph shows the velocity of a cyclist on a straight journey to \
the post box and back. At which point does the return journey \
start?<p>
correct:C
wrong1:A
wrong2:B
wrong3:D
feedback:\
The return journey starts when the cyclist's velocity first becomes \
negative and the journey back towards the starting point begins. This \
occurs at point C.<p>
[question12]
type:1
image:2g25
caption:\
This graph shows the displacement of car from its starting point. At \
which point on the journey does the car's speed reach a maximum?<p>
correct:B
wrong1:C
wrong2:D
wrong3:A
feedback:\
The car's velocity can be calculated by measuring the gradient of its \
displacement-time graph. The maximum gradient (and thus the car's \
maximum velocity) is at point B on the graph.<p>
[question13]
type:1
image:2g26
caption:\
This graph shows the displacement against time for two runners in a \
race. How far are they from the start when runner A overtakes runner \
B?<p>
correct:4 000 m
wrong1:3 000 m
wrong2:2 000 m
wrong3:1 000 m
feedback:\
When one runner overtakes the other, they are both at the same place \
at the same time. This is where the two lines on the graph cross. At \
this point, both runners are 4 000 m from the start.<p>
[question14]
type:1
image:2g27
caption:\
This graph shows displacement against time for two cars in a race. How \
far are they from the finish when car B overtakes car A?<p>
correct:10 km
wrong1:30 km
wrong2:20 km
wrong3:40 km
feedback:\
When one car overtakes the other, they are both at the same place at \
the same time. This is where the two lines on the graph cross. At this \
point, both cars are 10 km from the finish.<p>
[question15]
type:1
image:2g28
caption:\
Which line on this displacement-time graph shows an object moving with \
a velocity of 2.0 m/s?<p>
correct:C
wrong1:A
wrong2:B
wrong3:D
feedback:\
Velocity can be calculated by measuring the gradient of a \
displacement-time graph. The displacement of object C increases by 4.0 \
m in 2.0 s. Its velocity is therefore equal to 4.0 ÷ 2.0 = 2.0 \
m/s.<p>
[question16]
type:1
image:2g29
caption:\
Which line on this velocity-time graph shows an object accelerating at \
5.0 m/s<sup>2</sup>?<p>
correct:D
wrong1:C
wrong2:A
wrong3:B
feedback:\
Acceleration can be calculated by measuring the gradient of a \
velocity-time graph. The velocity of object D increases by 10 m/s in \
2.0 s. Its acceleration is therefore equal to 10 ÷ 2.0 = 5.0 \
m/s<sup>2</sup>.<p>
[question17]
type:1
image:2g30
caption:\
This graph shows displacement against time for a ball thrown \
vertically into the air and then caught again. For how many seconds is \
the ball in the air?<p>
correct:3.0 s
wrong1:2.0 s
wrong2:4.0 s
wrong3:5.0 s
feedback:\
The ball's displacement returns to 0.0 after 3.0 s, when it is caught \
again.<p>
[question18]
type:1
image:2g30
caption:\
This graph shows displacement against time for a ball thrown \
vertically into the air and then caught again. What is the maximum \
height reached by the ball?<p>
correct:10 m
wrong1:3.0 m
wrong2:1.5 m
wrong3:11 m
feedback:\
The maximum height reached by the ball is its maximum displacement. \
This is 10 m.<p>
[question19]
type:1
image:2g31
caption:\
This graph shows the speed of a falling raindrop against time. What is \
the raindrop's terminal velocity?<p>
correct:4.0 m/s
wrong1:2.0 m/s
wrong2:5.0 m/s
wrong3:3.0 m/s
feedback:\
The raindrop reaches a constant terminal velocity when the downward \
force of gravity is balanced by the upward force of air resistance. \
The graph shows that this occurs when the raindrop's velocity is 4.0 \
m/s.<p>
[question20]
type:2
caption:\
If a falling stone has an acceleration of 10 m/s<sup>2</sup> what is \
its speed when it has been falling from rest in a straight line for \
4.0 seconds?<p>
correct:40 m/s
wrong1:20 m/s
wrong2:4.0 m/s
wrong3:2.5 m/s
feedback:\
acceleration = velocity change/time<p>\
so,<p>\
velocity change = acceleration x time = 10 x 4.0 = 40 m/s.<p>\
Since the stone is falling is a straight line from rest its speed \
change will equal its velocity change = 40 m/s.<p>