A coffee cup on the horizontal dashboard of a car slides forward when the driver decelerates from 44.4 km/hr to rest in 3.65 s or less, but not if he decelerates in a longer time. What is the coefficient of static friction between the cup and the dash?© BrainMass Inc. brainmass.com March 4, 2021, 5:45 pm ad1c9bdddf
Initial velocity of the car u = 44.4 km/hr
u = 44.4 * (5/18) m/s = 12.33 m/s
Final velocity V = 0
We can write, v = u + at .....(1)
where a is the ...
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