Multiple Choice 2015-16
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Answer
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What is speed? What happens if we travel faster?
Speed is how far and object travels in a bit of time. To travel fast is to cover more distance in the same time, or the same distance in less time.
Speed is how far an object travels in a bit of time. To travel fast is to cover more distance in the same time, or the same distance in less time.
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What is the equation we use to calculate speed?
The average speed for a journey is the distance traveled ÷ total time.
The average speed for a journey is the distance traveled ÷ total time.
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What does the speed calculation tell you about your journey?
This is the average speed as you may have changed speed during the journey.
This is the average speed as you may have changed speed during the journey.
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What do we call the speed at a given moment in time?
The speed and any one moment in time is called the instantaneous speed.
The speed and any one moment in time is called the instantaneous speed.
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What makes roads safer?
Find out here: http://www.speedcamerasuk.com/gatso.htm http://www.speedcamerasuk.com/specs.htm
Which make for safer roads: GATSO or SPECS speed cameras? http://www.speedcamerasuk.com/gatso.htm http://www.speedcamerasuk.com/specs.htm
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What is the relationship between distance, speed and time?
speed and the quantitative relationship between average speed, distance and time (speed = distance ÷ time)
speed and the quantitative relationship between average speed, distance and time (speed = distance ÷ time)
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What are the units for distance and time?
The SI unit for distance is metres (m). The SI unit for time is seconds (s).
The SI unit for distance is metres (m). The SI unit for time is seconds (s).
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What unit do we measure speed in?
The SI unit for speed is metres per second (m/s).
The SI unit for speed is metres per second (m/s).
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How do you calculate the average speed of an object?
The average speed of an object is calculating by using the overall distance divided by the overall time taken to move this distance.
Calculate the average speed of some objects. G5: rearrange equations
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How can you plan a practical to investigate the factors that affect a trolley's speed?
Aim: The height of the ramp affects the average speed of the car.
PLANNING: - Aim: The height of the ramp affects the average speed of the car. - Hypothesis: That as the height of the ramp is increased the average speed of the car will increase.
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How do we represent journeys without writing a story?
A journey can be represented on a distance-time graph. Time is the independent variable as it is always changing, all be it not under our control.
A journey can be represented on a distance-time graph. Time is the independent variable as it is always changing, all be it not under our control.
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On a distance-time graph: What does a rising straight line from left to right indicate? What does a 'horizontal line from left to right indicate?
On a distance-time graph: - A rising straight line from left to right indicates a steady increase in distance, ie a constant speed. - A 'horizontal' line from left to right indicates no change in distance and therefore the object is stationary.
On a distance-time graph: - A rising straight line from left to right indicates a steady increase in distance, ie a constant speed. - A 'horizontal' line from left to right indicates no change in distance and therefore the object is stationary.
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What is the difference in speed between a car travelling a 30 m/s and a lorry travelling at 20 m/s? How did you work this out? What does this difference in speed show?
What is the difference in speed between a car travelling a 30 m/s and a lorry travelling at 20 m/s? => 10 m/s How did you work this out? => 30 take away 20 This is the relative motion between the car and the lorry.
What is the difference in speed between a car travelling a 30 m/s and a lorry travelling at 20 m/s? => 10 m/s How did you work this out? => 30 take away 20 This is the relative motion between the car and the lorry.
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What is meant by 'relative motion'?
The relative motion is the 'motion' (movement) of one object measured 'relative' (from) another.
The relative motion is the 'motion' (movement) of one object measured 'relative' (from) another.
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How much further does the car get away from the lorry in one second? What if the car starts behind the lorry?
How much further does the car get away from the lorry in one second? => 10 m/s What if the car starts behind the lorry? => The car would get closer, maybe collided at 10 m/s.
How much further does the car get away from the lorry in one second? => 10 m/s What if the car starts behind the lorry? => The car would get closer, maybe collided at 10 m/s.
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At what speed would they collide at if they were travelling towards each other? How did you work this out?
At what speed would they collide at if they were travelling towards each other? => 50 m/s How did you work this out? => 30 plus 20
At what speed would they collide at if they were travelling towards each other? => 50 m/s How did you work this out? => 30 plus 20
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What is velocity? What is negative velocity?
Velocity is speed in a direction. A negative velocity is in the opposite direction to a positive one.
Velocity is speed in a direction. A negative velocity is in the opposite direction to a positive one.
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If the lorry is travelling at 20 m/s and a car at -30 m/s what speed do they collide at? How did you work this out?
If the lorry is travelling at 20 m/s and a car at -30 m/s what speed do they collide at? => 50 m/s How did you work this out? => 20 take away minus 30
If the lorry is travelling at 20 m/s and a car at -30 m/s what speed do they collide at? => 50 m/s How did you work this out? => 20 take away minus 30
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What is weight?
The force due to gravity.
The force due to gravity is called weight.
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What is the difference between weight and gravity?
Gravity is an attraction between objects of mass. Weight is the force due to gravity.
Gravity is an attraction between objects of mass.
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How is the weight of an object increased?
The weight of an object will increase if the mass of the object is increased.
The weight of an object will increase if the mass of the object is increased.
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How is the weight of an object increased?
The weight of an object will increase if the gravitational pull on the object is increased.
The weight of an object will increase if the gravitational pull on the object is increased.
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What is gravitational pull also measured as?
The gravitational pull is measured as gravitational field strength.
The gravitational pull is measured as gravitational field strength.
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What is the calculation for weight?
Weight = mass x gravitational field strength (g).
Weight = mass x gravitational field strength (g).
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What sort of force is produced by gravity?
gravity produces a non-contact force
gravity produces a non-contact force
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How are different seasons caused?
the seasons and the Earth's tilt, day length at different times of year, in different hemispheres
the seasons and the Earth's tilt, day length at different times of year, in different hemispheres
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Mod
Number of Questions
0S
10
1B
10
1C
10
1P
10
BI
5