Question
Energy of Motion
Darla and Rob plan an investigation to see if adding weights to a car affects its speed down a ramp. Their experimental setup consists of a ramp made of a piece of wood that is 30 cm long. The ramp is propped up on four books to give it a height at one end of 8 cm.
The setup shows 4 books, a ramp and a car at the higher end of the ramp.Darla and Rob use their investigation setup and measure the time it takes the car to travel down the ramp. They record their data in the data table shown below.
Car
Mass Time in Seconds to Travel 30 cm
Trial 1 Trial 2 Trial 3
Car only 7.5 7.2 7.2
Car
25 g 6.5 6.3 6.6
Car
50 g 5.6 5.4 5.3
Select TWO statements below that BEST describe the data shown in the table.
A.
The data from the trials show that adding mass does not affect the car’s motion.
B.
The distance the car moves down the track increases as mass is added.
C.
The car slows down as more mass is added.
D.
The distance the car moves down the track decreases as mass is added.
E.
The data from the trials show that adding mass affects the car’s motion.
F.
The car moves faster as more mass is added.
Darla and Rob plan an investigation to see if adding weights to a car affects its speed down a ramp. Their experimental setup consists of a ramp made of a piece of wood that is 30 cm long. The ramp is propped up on four books to give it a height at one end of 8 cm.
The setup shows 4 books, a ramp and a car at the higher end of the ramp.Darla and Rob use their investigation setup and measure the time it takes the car to travel down the ramp. They record their data in the data table shown below.
Car
Mass Time in Seconds to Travel 30 cm
Trial 1 Trial 2 Trial 3
Car only 7.5 7.2 7.2
Car
25 g 6.5 6.3 6.6
Car
50 g 5.6 5.4 5.3
Select TWO statements below that BEST describe the data shown in the table.
A.
The data from the trials show that adding mass does not affect the car’s motion.
B.
The distance the car moves down the track increases as mass is added.
C.
The car slows down as more mass is added.
D.
The distance the car moves down the track decreases as mass is added.
E.
The data from the trials show that adding mass affects the car’s motion.
F.
The car moves faster as more mass is added.
Answers
GPT-4o mini
The two statements that BEST describe the data shown in the table are:
E. The data from the trials show that adding mass affects the car’s motion.
F. The car moves faster as more mass is added.
Explanation:
- Statement E is supported by the fact that as the mass of the car increases, the time taken to travel down the ramp decreases, indicating a change in the car's motion.
- Statement F reflects that the time decreases with the addition of mass, which means the car is moving faster with heavier weights.
Statements A, C, and D do not accurately represent the data, since the data shows that the car speeds up as mass is added rather than slowing down. Statement B is not supported since it discusses the distance moved rather than the observed changes in travel time.
E. The data from the trials show that adding mass affects the car’s motion.
F. The car moves faster as more mass is added.
Explanation:
- Statement E is supported by the fact that as the mass of the car increases, the time taken to travel down the ramp decreases, indicating a change in the car's motion.
- Statement F reflects that the time decreases with the addition of mass, which means the car is moving faster with heavier weights.
Statements A, C, and D do not accurately represent the data, since the data shows that the car speeds up as mass is added rather than slowing down. Statement B is not supported since it discusses the distance moved rather than the observed changes in travel time.