A school bus of mass 2200 kg is driving at 20 m/s when it hits a patch of ice. The driver panics and
slams on the brakes (locking the wheels). The coefficient of kinetic friction between ice and the rubber
tires is 0.24.
a) What is force of Kinetic Friction between ice and the rubber tires?
[2A)
b) What is the value of deceleration of the bus?
[2A]
(3A]
c) How long does it take the bus to stop?
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Ответ:
★ Temperature: 13 Kelvin.
★ Illustration: Particles are compact together.
»»Liquid:★ Temperature: 26 Kelvin.
★ Illustration: Particles are a little more spread apart but still holding the shape.
»»Gas:★ Temperature: 55 Kelvin.
★ Illustration: Particles are moving all over the place and are widely separated.