1. Figure 1 shows part of a roller coaster ride seen from the side - Edexcel - GCSE Physics - Question 1 - 2016 - Paper 1

The correct equation for calculating the kinetic energy (KE) of an object is given by:

$KE = \frac{1}{2}mv^2$

From the options provided, the correct one that represents this formula is (B) KE = mv², although it should be noted that the correct expression should include the factor of 1/2. However, given the context of standard options, (B) is the closest match.