Question

what type of quantity does a speedometer measure and why?

Answer 1

look up the terms:
a)scalar
b) vector

Answer 2

t's a scalar. but if you really want to confuse yourself, consider that it's not even measureing the actual speed of the vehicle, but the rotational speed of some element of the drivetrain. on my vehicle, the speedo cable attaches at the

Read more: http://www.physicsforums.com