1.5.2. Friction
A subsection of Physics, 5054, through 1. Motion, forces and energy
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State what is meant by friction. shows two horizontal forces that act on a car. Force B is caused by air resistance and friction. force B force A The car is travelling along a straight level road. The forward force A and the backward force B are equal. Describe the motion of the car. The mass of the car is 800 kg. Force A increases to 5000 N. This causes the car to accelerate initially at 1.5 m / s2. Calculate the size of force B. force B = Force A remains constant at 5000 N. Explain why the acceleration decreases as the car travels along the level road. A car of mass 800 kg climbs a hill and rises a vertical distance of 200 m. Calculate the gain in potential energy of the car. (The gravitational field strength g is 10 N / kg.) gain in potential energy =
5054_s12_qp_22
THEORY
2012
Paper 2, Variant 2
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Questions Discovered
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