Which of these is a vector? A energy B force C mass D work (b) (i) State the equation that relates acceleration to change in velocity and time taken - Edexcel - GCSE Physics - Question 3 - 2020 - Paper 1

The equation that relates acceleration (a) to change in velocity (Δv) and time (t) is:

$a = \frac{\Delta v}{t}$

where Δv = final velocity - initial velocity.

To calculate the acceleration of the van, we can use the formula:

$a = \frac{v_f - v_i}{t}$

where: v_f = final velocity = 20 m/s v_i = initial velocity = 2 m/s t = time = 12 s

Substituting the values: $a = \frac{20 \text{ m/s} - 2 \text{ m/s}}{12 \text{ s}} = \frac{18 \text{ m/s}}{12 \text{ s}} = 1.5 \text{ m/s}^2$

Thus, the acceleration of the van is 1.5 m/s².