 Motion Graphs and Forces Flashcards Preview

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Flashcards in Motion Graphs and Forces Deck (105):
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describe the motion of a on this distance/time graph 32

describe the motion of e on this distance/time graph 33

describe the motion of b and c on this distance/time graph 34

describe the motion of f on this distance/time graph 35

describe the motion of a on this velocty/time graph 36

describe the motion of d on this velocity/time graph 37

describe the motion of b and c on this velocity/time graph 38

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calculate the resultant force and the accelertaion of this 5.0kg mass 40

calculate the resultant force and the accelertaion of this 5.0kg mass 41

calculate the resultant force and the accelertaion of this 5.0kg mass 42

calculate the resultant force and the accelertaion of this 5.0kg mass 43

what is the reaction time of the driver? 44

calculate the thinking distance 45

how long did the car brake for? 46

calculate the braking distance 47

calculate the stopping distance if it has been previously worked out that the thinking distance is 12m and the braking distance is 22m 48

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complete this skydiver velocity/time graph  52

state the value or direction of the resultant force at A 53

state the value or direction of the resultant force at B 54

state the value or direction of the resultant force at C 55

state the value or direction of the resultant force at D 56

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which force is the foward force from the engine?which force is the force resisting the van's motion? 62

complete this table  63

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what part of the graph represents thinking time of the driver and what is this time in seconds? 71

calculate the distance travelled by the car in thinking time 72

calculate the acceleration of the car after the brakes are applied 73

calculate the distance travelled by the car during braking 74

the mass of the car is 800kgcalculate the braking force 75

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What four forces are acting on a moving car? 93

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How can you investigate falling objects using sycamore seeds?

1. Sycamore seeds have a small wieght and a large surface area so they reach terminal velocity really quickly and fall slowly2. Collect a bunch of sycamore seeds of different sizes and measure the mass and wing length of each one. Use an accurate ruler and repeat each measurement several times to make sure it's accurate. Use all the seeds that have similar masses but different wavelengths3. Drop each of the seeds from the same height and use a stopwatch to find how long each one takes to fall to the ground. The higher you drop them the better - it gives a larger measurement and so improves the accuracy of the measurement4. Repeat the experiment for each seed and find an average time5. Plot a graph of length of the wings (x) against the time taken to hit the floor (y). This will tell you if there is a relationship between the shape of the sycamore seeds and their terminal velocity6. Bigger wings means bigger surface area and so higher drag. Higher drag means lower terminal velcoty, and so the seeds fall more slowly 100

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Be able to describe the motion of objects on a distance/time graph 104

Be able to describe the motion of objects on a velocity/time graph 105