The diagrams show the horizontal forces acting on the cyclist at three different speeds. The length of an arrow represents the size of the force.
A
B
с
Which one of the diagrams, A, B or C, represents the forces acting when the
cyclist is travelling at a constant 9 m/s?
С
Explain the reason for your choice.

Acar traveling at a constant speed of 22.0 m/s passes a trooper hidden behind a billboard. one second after the speeding car passes the billboard, the trooper sets off in chase with a constant acceleration of 3.50 m/s2. how long does it take the trooper to overtake the speeding car? solve this problem by a graphical method. on the same graph, plot position versus time for the car and the trooper.