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.

Answered by Edward W. Physics tutor

14630 Views

See similar Physics A Level tutors

Related Physics A Level answers

All answers ▸

Find the magnitude of the force on an electron that is travelling with velocity 2 x 10^4 ms^(-1) in the x direction through a uniform magnetic field of strength 2T in the y direction.


Sphere A (mass m), moving with speed 3v, collides with sphere B (mass 2m) which is moving in the opposite direction with speed v. The two spheres then combine, calculate the resulting velocity of the combined spheres.


If a wire loop moves at constant speed into a region where there is a magnetic field, why is a current induced in the wire?


Describe how standing waves are formed and explain why nodes and antinodes are formed.


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences