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

The equation for acceleration ($a$) is given by:

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

where (\Delta v) is the change in velocity and (t) is the time taken.

To find the acceleration of the van, we first calculate (\Delta v):

1. Initial velocity (u) = 2 m/s
2. Final velocity (v) = 20 m/s
3. Time (t) = 12 s

The change in velocity is:

$\Delta v = v - u = 20 \text{ m/s} - 2 \text{ m/s} = 18 \text{ m/s}$

Now, substituting into the acceleration formula:

$a = \frac{\Delta v}{t} = \frac{18 \text{ m/s}}{12 \text{ s}} = 1.5 \text{ m/s}^2$

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