What is the angular speed of a car wheel of diameter 0.400m when the speed of the car is 108km/h?

A) 75 rad/s      B) 150 rad/s      C) 270 rad/s      D) 540 rad/s       Identify equation as w=v/r      Diameter = 0.4m  Radius  = half the diameter = 0.2m       Velocity needs to be in m/s so 108km/h = 108000m/h = 30m/s (divide by 60 twice).       Angular velocity = v/r = 30/0.2 = 150 therefore B is the answer.

EW
Answered by Edward W. Physics tutor

15365 Views

See similar Physics A Level tutors

Related Physics A Level answers

All answers ▸

An unknown capacitor is charged to 6v, its maximum value, then discharged through a 1k ohm resistor. If the capacitor voltage is 3v, 0.3 seconds after starting to discharge, what is the capacitance of the unknown capacitor?


If a ball is launched at ground level at a velocity v and angle θ, find an expression for it's height at horizontal distance x.


How are X-rays created?


If one proton is travelling through space at 0.3c, what is it's kinetic energy in MeV?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning