4 (a) 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 cart. The child and cart have a total mass of 60 kg. The total momentum of the child and the cart is 90 kg m/s. (i) Calculate the velocity of the child and the cart.

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4 (a) 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

Question 4

4 (a) 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 push... show full transcript

Worked Solution & Example Answer:4 (a) 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

The correct answer is 'B momentum'. Momentum is a vector quantity because it has both magnitude and direction.

Step 2

Calculate the velocity of the child and the cart.

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Answer

To find the velocity, we can use the formula for momentum, which is given by:

$p = mv$

where:

$p$ is the momentum (90 kg m/s)
$m$ is the mass (60 kg)
$v$ is the velocity

Rearranging the formula to solve for velocity:

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

Substituting in the values:

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

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

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4 (a) 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

Worked Solution & Example Answer:4 (a) 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

Which one of these is a vector quantity?

Calculate the velocity of the child and the cart.

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