Chapter 3 Forces Part 3 - Friction
• explain the effects of friction on the motion of a body
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When a block of wood of mass 2 kg is pushed along the horizontal flat surface of a bench, the friction force measured is 4 N. When the block is pushed along the same bench with a force of 10 N, it moved with a constant ________________. *
1 point
A box of mass 4 kg moves horizontally with a constant speed of 1.5 m/s when a force of 10 N is applied. What is the acceleration of the box if the applied force is 18 N? *
0 points
When a heavy box of mass 20 kg is pushed along the horizontal flat surface of a floor with a force of 10 N, the box moves with a constant acceleration of 0.2 m/s². Calculate the frictional force of the floor surface. *
1 point
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A car is accelerating along a road in the direction shown. The wheel shown is connected to the engine. In which direction is the force of friction exerted by the road on the car tyre? *
1 point
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