A ticker timer machine makes a series of dots on a paper tape moving through the machine.
Usually they make 50 dots each second.
The quicker the tape goes through the machine, the dots are further apart.
The slower the tape goes through the machine, the closer together the dots are.
They can be used to investigate speed or acceleration.
The tape is cut into lengths representing equal time, and used to make speed time graphs.
Every 5 dots on the tape shows distance moved in 0.15.
You can work out the velociy using this equation: velocity= distance (length of tape)/ time (0.1) seconds.

	Criado por e.bains mais de 10 anos atrás

b) movement and position

Physics section 1: Forces and motion