# Question

A car accelerating from rest is a noninertial system. Explain the “forces” (and draw the free-body diagram) that the driver uses to explain why a coffee mug on the slippery dashboard might slide “backward.” How does the inertial observer on the roadside explain this motion?

## Answer to relevant Questions

At an astronomical meeting, it is reported two galaxies had been detected, approaching each other with speeds of 0.700c and 0.600c (relative to the Earth), respectively. As a cub reporter, you are tempted to rush out and ...In a gedanken experiment (Fig. 26.17), two events that cannot be related by cause and effect occur in the same inertial reference frame O: (1) Strobe light A, at the origin of the x- axis, flashes; (2) strobe light B, ...One of a pair of 25-year-old twins takes a round trip through space while the other twin remains on Earth. The traveling twin moves at a speed of 0.95c for a total of 39 years, according to Earth time. Assuming that special ...(a) To see that length contraction is negligible at everyday speeds, determine the length contraction (∆L) of an automobile 5.00 m long when it is traveling at 100 km/h. The diameter of an atomic nucleus is on the order of ...A speedboat can travel with a speed of 50 m/s in still water. If the boat is in a river that has a flow speed of 5.0 m/s, (a) Find the maximum and minimum values of the boat’s speed relative to an observer on the ...Post your question

0