Complete the sentence - AQA - GCSE Physics - Question 1 - 2019 - Paper 1
Question 1
Complete the sentence.
Choose the answer from the box.
The force from the athlete pushing backwards on the starting blocks is ________________ the force from the st... show full transcript
Worked Solution & Example Answer:Complete the sentence - AQA - GCSE Physics - Question 1 - 2019 - Paper 1
Step 1
Complete the sentence.
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Answer
The force from the athlete pushing backwards on the starting blocks is equal to the force from the starting blocks pushing forwards on the athlete.
Step 2
What distance does the athlete travel after the end of the race before stopping?
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Answer
Distance = 25 m
Step 3
Calculate the average speed of the athlete between the start and finish of the 100 metre race.
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Answer
The average speed can be calculated using the formula:
av ext{speed} = rac{ ext{distance}}{ ext{time}}
Here, the distance is 100 metres and the time can be derived from the athlete's speed of 8 m/s.
Thus,
av ext{speed} = rac{100}{8} = 12.5 ext{ m/s}
Step 4
What is the average running speed of a typical person in metres per second?
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Answer
The average running speed of a typical person is 3.0 m/s.
