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 putting a cross (❌) in the box next to your answer. He first stops moving A before all the energy has disappeared B before the bungee cord starts to stretch C when the bungee cord is stretched the most D when the elastic potential energy is zero (b) Complete the sentence by putting a cross (❌) in the box next to your answer. When his speed is 10 m/s his momentum is A 600 kg m/s B 3000 kg m/s C 6000 N m/s D 30 000 N m/s

GCSE Edexcel Physics Momentum: A 60 kg student weighs 600 N. He

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 by putting a cross (❌) in the box next to your answer. He first stops moving

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Answer

The correct option is B (before the bungee cord starts to stretch). This is because the bungee jumper decelerates as he descends until he reaches the point where the bungee cord begins to exert a force on him.

Step 2

Complete the sentence by putting a cross (❌) in the box next to your answer. When his speed is 10 m/s his momentum is

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Answer

To find momentum, we use the formula: $p = mv$ where

$p$ is momentum,
$m$ is mass (in kg), and
$v$ is velocity (in m/s).

Given that the student has a weight of 600 N, we first find the mass:

Weight = mass × gravity, where gravity is approximately 9.81 m/s². Thus,

$m = \frac{600}{9.81} \approx 61.15 ext{ kg}$

Now we can calculate momentum when speed is 10 m/s:

$p = 61.15 ext{ kg} × 10 ext{ m/s} \approx 611.5 ext{ kg m/s}$ .

Since none of the options are exactly 611.5, we can round or re-evaluate, but if we specifically take the weight/momentum relationship, the correct answer should be A (600 kg m/s) based on the context or adjustments in rounding.

A 60 kg student weighs 600 N - Edexcel - GCSE Physics - Question 2 - 2013 - Paper 1

Worked Solution & Example Answer:A 60 kg student weighs 600 N - Edexcel - GCSE Physics - Question 2 - 2013 - Paper 1

Complete the sentence by putting a cross (❌) in the box next to your answer. He first stops moving

Complete the sentence by putting a cross (❌) in the box next to your answer. When his speed is 10 m/s his momentum is

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