1. Kinematics
Relative Motion — Quiz
Test your understanding of relative motion with 5 practice questions.
Practice Questions
Question 1
A person is on a train moving at $15 \text{ m/s}$ east. The person walks towards the front of the train at $2 \text{ m/s}$ relative to the train. What is the velocity of the person relative to the ground?
Question 2
A boat is moving north at $6 \text{ m/s}$ relative to the water. The river current is flowing south at $2 \text{ m/s}$ relative to the ground. What is the velocity of the boat relative to the ground?
Question 3
An object is dropped from a moving car. Relative to the car, the object falls straight down. Relative to the ground, what is the horizontal motion of the object?
Question 4
A bird flies at $12 \text{ m/s}$ in still air. If it flies directly into a headwind of $3 \text{ m/s}$, what is its speed relative to the ground?
Question 5
A person walks on a moving walkway at an airport. The walkway moves at $1.0 \text{ m/s}$ relative to the ground. The person walks at $0.5 \text{ m/s}$ relative to the walkway in the opposite direction of the walkway's motion. What is the person's speed relative to the ground?