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

تمرين 83

Two cars approach each other on a straight, level highway. Car A travels at 60 km/h and car B at 80 km/h. The driver of car B sees car A approaching at a speed of (a) 60 km/h, (b) 80 km/h, (c) 20 km/h, (d) greater than 100 km/h.