An observer on the ground measures a building to be 100 m long

PHYSICS · Subjective · A Level · Physics · Turning points in physics · Turning points in physics

Problem

An observer on the ground measures a building to be 100 m long. Calculate the length of the building measured by another observer sitting in a car travelling at

0.85c

relative to the ground.

Related theory

Special Relativity
Angular motion variables
Laws of Motion
Factors and their count

Browse the problem library