Basic concepts of kinematics
Answers are for parents and teachers.
1
It is 500 m from home to school. What path does a pupil cover going there and back?
1000
2
What is that pupil’s displacement for the round trip?
0 m
3
Give one example of motion with a straight trajectory and one with a curved one.
Straight: a stone falling vertically; curved: a thrown ball.
4
A hiker walks 3 km west and then 4 km north. Find the path, then draw a scale diagram (1 cm = 1 km) and measure the displacement magnitude.
Path 7 km; displacement magnitude 5 km.