John is sitting inside a stationary train at a train station. Through the window, he observes only the windows of a train on the adjacent platform. Suddenly, the windows of the adjacent train begin to move. Therefore, John can be sure that it's the adjacent train that is moving.
A driver drives a car in a compact column. Therefore, the car moves relative to neighboring cars.
A passenger gets up from the seat of a moving aircraft and walks towards the cockpit. Therefore, the passenger is moving relative to the plane and relative to the observer on Earth.
Jane stands on the road. A bus full of passengers passes by. Therefore, the passengers are at rest in relation to the bus, and in relation to Jane, they are moving.
. Calculate the speed at which the Earth travels around the Sun.
. Car Y has a constant acceleration of 
. At the instant shown, car X is a distance 
ahead of car Y. Car Y is travelling at a speed of 
.
. What is the distance 
increases its velocity from 
to 
in time 
. Which expression would not give a correct value for the body’s displacement during time 
and an acceleration 
. The object moves in a straight line through a displacement 
and has final velocity 
.
on an outward flight and at 
on the return flight over the same distance. What is the average speed of the whole flight?
race in a straight line. He accelerates from the starting block at a constant acceleration of 
to reach his maximum speed of 
. He maintains this speed until he crosses the finish line. Which time does it take the sprinter to run the race?
can bring his car to rest in a distance of 
. If he had been travelling at 
, in what distance could he bring the car to rest using the same braking force?
is riding a bicycle at a constant velocity of 
. At time 
, she passes a boy 
sitting on a bicycle that is stationary as illustrated by the diagram below.
in a time of 
. He then continues at a constant speed of 
, the boy catches up with the girl.
is measured in seconds.
and falls towards the ground until he opens the parachute at an altitude of 
. When falling, he reaches a speed of sound of 
at an altitude of 
. Is the air resistance during the 
