College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

تمرين 114

A car travels three-quarters of a lap on a circular track of radius R. (a) The magnitude of the displacement is (1) less than R , (2) greater than R , but less than 2 R , (3) greater than 2 R. (b) If R - 50 m, what is the magnitude of the displacement