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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, chemical energy in the student's muscles is converted into gravitational potential energy (GPE) as the toy car gains height at the top of the slope.
Step 2
The student lets the toy car roll down the slope.
Answer
To accurately measure the distance the toy car travels down the slope, the student should first measure the length of the slope (distance) from the top to the bottom. Then, they would use a timer to record the time it takes for the car to reach the bottom.
Using the formula for speed, which is:
the student can calculate the speed of the toy car as it rolls down the slope.