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Many quantities can be measured during the race - Edexcel - GCSE Physics - Question 1 - 2017 - Paper 1

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Many quantities can be measured during the race. Which of these quantities is a vector quantity? Put a cross (✗) in the box next to your answer. A velocity B mass... show full transcript

Worked Solution & Example Answer:Many quantities can be measured during the race - Edexcel - GCSE Physics - Question 1 - 2017 - Paper 1

Step 1

Which of these quantities is a vector quantity?

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Answer

The vector quantity among the options provided is A) velocity. This is because velocity has both magnitude and direction, unlike mass, kinetic energy, and distance, which are scalar quantities.

Step 2

Calculate the size of the resultant force that produces this acceleration.

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Answer

To calculate the resultant force ( F ), we can use Newton's second law of motion, which states:

F=mimesaF = m imes a Where:

  • FF = resultant force
  • mm = mass = 70.0 kg
  • aa = acceleration = 2.4 m/s²

Now substituting the values:

F=70.0extkgimes2.4extm/s2=168extNF = 70.0 ext{ kg} imes 2.4 ext{ m/s}^2 = 168 ext{ N}

Thus, the size of the resultant force is 168 N.

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