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

To determine the correct equation for calculating the kinetic energy (KE) of the roller coaster car, we use the fundamental formula for kinetic energy in physics. The kinetic energy of an object is given by the formula:

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

where:

• $m$ is the mass of the object (in kilograms),
• $v$ is the velocity of the object (in meters per second).

Thus, the correct choice among the options provided is:

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