Motion graphsIB MYP Sciences: Mind map

Exam questions on Motion graphs

1. A student plots a distance–time graph for a toy robot moving along a straight corridor. The line rises in a straight slope from 0 m at 0 s to 12 m at 8 s, stays horizontal until 14 s, and then rises in a straight slope to 24 m at 20 s.
   Calculate the robot's speed between 14 s and 20 s.2 marks
2. A tram in Istanbul leaves a stop. Its velocity–time graph is a straight line rising from 0 m/s at 0 s to 12 m/s at 6 s, then a horizontal line until 16 s, then a straight line falling to 0 m/s at 20 s.
   Describe, with a calculation, the motion of the tram between 16 s and 20 s.2 marks
3. Priya, a student in Cape Town, investigates how the angle of a runway affects the acceleration of a trolley released from rest. A data logger plots a velocity–time graph for each run. She uses the same trolley and the same runway each time. Every graph is a straight line starting at the origin. The velocity after 1.0 s is 1.6 m/s for a runway angle of 10°, 3.2 m/s for 20° and 4.7 m/s for 30°.
   Identify the independent variable, the dependent variable and one variable that Priya must control.3 marks