A rock band’s tour bus, mass M, is accelerating away from a STOP sign at rate a when a boulder, mass M/6, falls onto the top of the bus and remains there.
a. Show that the bus’s acceleration is now (equation).
b. If the initial acceleration of the bus was 1.2 m/s2, show that when the bus carries the boulder with it, the acceleration will be 1.0 m/s2
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