The final velocity, v, of a stone, t seconds after the stone was thrown upwards with an initial velocity, u, is given by the equation: v = u - 9.8 t A stone was thrown upwards with an initial velocity, u = 12 m/s. Which of the following statements would then be correct at a time, t = 2.0 seconds?

The stone is travelling upwards at 4.4 m/s

The stone is travelling downwards at 7.6 m/s

The stone is travelling upwards at 7.6 m/s

In algebra, there are conventions about how products of numbers and letters can be written. Which of the following statements is correct ?

'x multiplied by 4y' can be written as: x4y

'a multiplied by 2y' can be written as: 2ay

'3p multiplied by 4' can be written as: 3p4

Which one of the following equations is correct?

- 3a(b - 2c) = - 3ab + 6c

- 3a(b - 2c) = - 3ab - 6ac

- 3a(b - 2c) = - 3ab + 6ca

Choose the equation that represents the following statement: ”I think of a number, n, double it, take away 6, and then multiply the result by p, giving a final value, N”.

N = 2n - 6 × p

N = (n^{2} - 6) × p

N = p(2n - 6)

The factors of the expression '4x + 6xy' are

4x and 6xy

4, 6, x and (1 + y)

2, x and (2 + 3y)

The fraction can be simplified by cancellation to give: