Figure 1 shows a person sliding down a zip wire. (a) As the person slides down the zip wire the change in the gravitational potential energy of the person is 147 kJ The mass of the person is 60 kg gravitational field strength=9.8N/kg Calculate the change in vertical __ __ Change in verical height=

## Step 1: To find the change in vertical height, we need to rearrange the formula for gravitational potential energy, which is , where is the gravitational potential energy, is the mass of the object, is the acceleration due to gravity, and is the height of the object from the ground. ### The rearranged formula is ## Step 2:Substitute the given values into the rearranged formula. The gravitational potential energy is given as kJ, which is J (since kJ = J). The mass of the person is kg and the gravitational field strength is N/kg.### The calculation is ## Step 3:Perform the calculation to find the change in vertical height .