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The book slides with constant velocity.
If the crate isn't accelerating ... i.e. sliding at a constant speed, not speeding up or slowing down ...then the forces on it are balanced. The pseudo-force of friction is 140N in the direction opposite toits speed.
Slidig Friction is the kind of friction.
Non-sequitor. The friction of the ice, although minimal, causes a puck to travel at a decreasing speed. Given no friction, a puck could be said to have momentum equilibrium.
Friction is encompassed by Newton's laws, as opposed to operating out side of it. If a block slides down a wedge, there is friction acting against the block up the slope. From the wedge's perspective, the block produces a frictional force against it, trying to drag it downwards along the slope.
The book slides with constant velocity.
According to Newton's second law, F=ma. That is, the bear's acceleration should be proportional to the total force acting on the bear. As the bear's velocity is constant, its acceleration is zero. Therefore, the total Force acting on the bear is zero. Thus, the friction has to be equal in magnitude and opposite in direction to the bear's weight. As W=mg, we get that its weight is 9.8*400=3,920 Newton. Thus, the friction acting on the bear is 3,920 Newton upwards.
If the crate isn't accelerating ... i.e. sliding at a constant speed, not speeding up or slowing down ...then the forces on it are balanced. The pseudo-force of friction is 140N in the direction opposite toits speed.
Slidig Friction is the kind of friction.
If the surface is smooth then it is almost frictionless. Hence the body will continue to move with constant velocity. However the object continues in a circular path and the weight is thus the centripetal force. It is assumed that the surface is very large)
Non-sequitor. The friction of the ice, although minimal, causes a puck to travel at a decreasing speed. Given no friction, a puck could be said to have momentum equilibrium.
Friction is encompassed by Newton's laws, as opposed to operating out side of it. If a block slides down a wedge, there is friction acting against the block up the slope. From the wedge's perspective, the block produces a frictional force against it, trying to drag it downwards along the slope.
Due to friction
Kinetic friction is the friction that arises between surfaces in relative motion. Sliding friction is the friction that occurs when an object slides over a surface.
40 newtons. give the explanation of this
sliding
That's the 'kinetic' kind..