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Question 3

A particle $P\,$ of mass 2 kg is moving under the action of a constant force $F\mathbf{F}$ newtons. When $t = 0$ , $P\,$ has velocity $s−1(3\mathbf{i} + 2\mathbf{j}) \text{ m s}^{-1}$ and at time $\text{ s}$ , $P\,$ has velocity $s−1(15\mathbf{i} - 4\mathbf{j}) \text{ m s}^{-1}$ .

a.

Find the acceleration of $P\,$ in terms of $i\mathbf{i}$ and $j\mathbf{j}$ .

[2]

b.

Find the magnitude of $F\mathbf{F}$ .

[4]

c.

Find the velocity of $P\,$ at time $\text{ s}$ .

[3]

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Question 3

A particle $P\,$ of mass 2 kg is moving under the action of a constant force $F\mathbf{F}$ newtons. When $t = 0$ , $P\,$ has velocity $s−1(3\mathbf{i} + 2\mathbf{j}) \text{ m s}^{-1}$ and at time $\text{ s}$ , $P\,$ has velocity $s−1(15\mathbf{i} - 4\mathbf{j}) \text{ m s}^{-1}$ .

a.

Find the acceleration of $P\,$ in terms of $i\mathbf{i}$ and $j\mathbf{j}$ .

[2]

b.

Find the magnitude of $F\mathbf{F}$ .

[4]

c.

Find the velocity of $P\,$ at time $\text{ s}$ .

[3]

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Question 3

Markscheme

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Markscheme

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