Here are the step-by-step solutions for each question on the worksheet.
1. This is the total path travelled from one location to another.
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Reasoning: In physics, "distance" refers to how much ground an object has covered during its motion (the total length of the path). "Displacement" only cares about the starting and ending points. Since the question asks for the "total path," it is referring to distance.
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Answer: b. distance
2. Is the distance travelled from its initial position to its final position.
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Reasoning: This definition describes the straight-line difference between where you started and where you ended. This is the definition of displacement.
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Answer: a. displacement
3. Using the figure below, what is the distance travelled by the boy?
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Reasoning: Distance is the sum of all the segments traveled. Looking at the path:
* From A to B = 4 meters
* From B to C = 3 meters
* From C back to A = 5 meters
* Total Distance = $4 + 3 + 5 = 12$ meters.
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Answer: c. 12 meters
4. Look at the figure below. Miss Rose walks 4m east, 2m south, then 4m west and 2m north. What is her total displacement?
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Reasoning: Displacement measures the change in position from start to finish.
* She goes 4m East, then later goes 4m West. These cancel out ($4 - 4 = 0$). She is back to her original horizontal position.
* She goes 2m South, then later goes 2m North. These also cancel out ($2 - 2 = 0$). She is back to her original vertical position.
* Since she ended up exactly where she started, her displacement is zero.
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Answer: c. 0 meter
5. Which one is correct about speed?
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Reasoning: The formula for average speed is defined as the total distance traveled divided by the total time taken. Option (b) describes velocity (displacement/time), and option (c) describes acceleration.
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Answer: a. Speed is equal to total distance over time used.
6. A bus takes 5 seconds to travel a distance of 95 meters. What is the bus speed?
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Reasoning: Use the speed formula: $\text{Speed} = \frac{\text{Distance}}{\text{Time}}$.
* Distance = 95 meters
* Time = 5 seconds
* Calculation: $95 \div 5 = 19$.
* The unit is meters per second (m/s).
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Answer: c. 19 m/s
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Final Answer:
1. b
2. a
3. c
4. c
5. a
6. c
Parent Tip: Review the logic above to help your child master the concept of displacement velocity and acceleration worksheet.
