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Which one of these is a vector quantity? Put a cross (X) in the box next to your answer - Edexcel - GCSE Physics - Question 4 - 2018 - Paper 1

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Which one of these is a vector quantity? Put a cross (X) in the box next to your answer. A) energy B) momentum C) power D) work (b) A father pushes his child in a... show full transcript

Worked Solution & Example Answer:Which one of these is a vector quantity? Put a cross (X) in the box next to your answer - Edexcel - GCSE Physics - Question 4 - 2018 - Paper 1

Step 1

Which one of these is a vector quantity?

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Answer

Many physical quantities can be classified as either scalar or vector quantities. In this case, the correct answer is B) momentum, as it has both magnitude and direction, distinguishing it as a vector.

Step 2

Calculate the velocity of the child and the cart.

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Answer

To find the velocity (v) of the child and the cart, we can use the formula for momentum (p), which is given by:

p=mimesvp = m imes v

Where:

  • p is momentum (90 kg m/s)
  • m is mass (60 kg)

Rearranging the formula to solve for velocity gives us:

v=pmv = \frac{p}{m}

Substituting the known values:

v=90 kg m/s60 kg=1.5 m/sv = \frac{90 \text{ kg m/s}}{60 \text{ kg}} = 1.5 \text{ m/s}

Thus, the velocity of the child and the cart is 1.5 m/s.

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