Physics

Identifying the Doppler effect equation applicable to a specific relative motion between the sound source and the observer using the Doppler effect generalized formula can be confusing. This post outlines a straightforward method to extract the relevant Doppler effect equation for any relative motion scenario described by the generalized formula, making the process much easier.

A cart released from rest rolls down a frictionless 30-degree ramp, then bounces off a rubber block at the bottom of the ramp. Calculate the average force of impact on the rubber block.

PROBLEM: A 1000 kg car traveling north-east at 20 m/s collides with a 1800. kg car traveling west at speed 16 m/s. After the collision the two cars stick together and skid for a distance. Calculate the speed and direction of the wreckage immediately after the collision.

Comprehensive guidance on deriving the Doppler effect equations for relative motion between a sound source and an observer moving along a straight line connecting the two.