Photo AI
A student lifts a toy car from a bench and places the toy car at the top of a slope as shown in Figure 2 - Edexcel - GCSE Physics - Question 2 - 2020 - Paper 1
Question 2
A student lifts a toy car from a bench and places the toy car at the top of a slope as shown in Figure 2. (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 2 - Edexcel - GCSE Physics - Question 2 - 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 from the student's muscles is converted into gravitational potential energy (GPE) of the toy car. This energy transfer occurs as the student applies a force to lift the toy car against the force of gravity, effectively storing energy as it is elevated to the top of the slope.
Step 2
Describe how the student could find, by experiment, the speed of the toy car at the bottom of the slope.
Answer
To experimentally determine the speed of the toy car at the bottom of the slope, the student should:
-
Measurement of Distance: Measure the distance the toy car travels down the slope using a ruler or measuring tape. This distance can be taken as the length of the slope.
-
Measurement of Time: Use a stopwatch to measure the time it takes for the toy car to reach the bottom of the slope. Start the timer as the car begins to roll and stop it when the car reaches the bottom.
-
Calculate Speed: Calculate the speed of the toy car using the formula:
ext{Speed} = rac{ ext{Distance}}{ ext{Time}}
-
Detailing the Procedure: To improve accuracy, the student could repeat the measurements several times and take an average of the length traveled down the slope and the time taken. Additionally, using a light gate at the bottom of the slope could provide more precise measurements of the speed.