What is the magnitude of the centripetal acceleration of a car following a curve of radius 500 m at a speed of 25.0 m/s (about 90 km/h)? Compare the acceleration with that due to gravity for this fairly gentle curve taken at highway speed. See Figure 6.8(a).

Strategy
Because and are given, the first expression inis the most convenient to use.

Transcribed Image Text:

ac || 2²; ac rw² acro