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A student lifts a toy car from a bench and places the toy car at the top of a slope as shown in Figure 1 - Edexcel - GCSE Physics Combined Science - Question 1 - 2020 - Paper 1
Question 1
A student lifts a toy car from a bench and places the toy car at the top of a slope as shown in Figure 1. (a) Describe an energy transfer that occurs when the stude... show full transcript
Worked Solution & Example Answer:A student lifts a toy car from a bench and places the toy car at the top of a slope as shown in Figure 1 - Edexcel - GCSE Physics Combined Science - Question 1 - 2020 - Paper 1
Step 1
Describe an energy transfer that occurs when the student lifts the toy car from the bench and places the toy car at the top of the slope.
Answer
When the student lifts the toy car from the bench to the top of the slope, mechanical energy is transferred to gravitational potential energy (GPE). The work done against gravity results in an increase in the toy car's potential energy as it is elevated above the initial height.
Step 2
The student lets the toy car roll down the slope.
Answer
To measure the speed of the toy car as it rolls down the slope, the student can use a stopwatch to record the time taken for the car to travel a predetermined distance down the slope. This distance can be measured using a ruler. The speed can then be calculated using the formula:
Furthermore, the student can repeat the measurement multiple times to ensure accuracy and average the results for a more reliable calculation.