A 60 kg student weighs 600 N - Edexcel - GCSE Physics - Question 2 - 2013 - Paper 1
Question 2
A 60 kg student weighs 600 N.
He does a bungee jump.
The bungee cord becomes straight and starts to stretch when he has fallen 50 m.
(a) Complete the sentence by p... show full transcript
Worked Solution & Example Answer:A 60 kg student weighs 600 N - Edexcel - GCSE Physics - Question 2 - 2013 - Paper 1
Step 1
Complete the sentence: He first stops moving
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Answer
The correct option is C when the bungee cord is stretched the most. This is because the student experiences maximum deceleration at that point, where all his kinetic energy has been converted into elastic potential energy.
Step 2
Complete the sentence: When his speed is 10 m/s his momentum is
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Answer
The correct option is A 600 kg m/s. Momentum (p) is calculated using the formula:
p=mimesv
where 'm' is the mass and 'v' is the velocity. In this case, the mass of the student is 60 kg, so:
p=60extkgimes10extm/s=600extkgm/s
