If the horizontal velocity is constant, then the horizontal acceleration is zero,
and the net horizontal force is zero.
But if you are saying that the body was in constant motion and after that the force was applied, then the body will acccelerate because of the force. The net force applied on the body would be equal to the force applied to it when the body was in constant motion as here the force is in direction of the motion and hence the angle will be 0 giving the value of cos 0º as 1. Hence there would be no reduction in the net force
If the box's horizontal velocity is constant, then its horizontal acceleration is zero.
That tells us that the net horizontal force is zero, so the friction force pushing
backwards must be exactly equal to the man's force pushing forward = 100 N.
The laws of Physics have not changed since you posted the same question,
and we answered it, 12 hours earlier.
If the box's horizontal velocity is constant, then its horizontal acceleration is zero.
That tells us that the net horizontal force is zero, so the friction force pushing
backwards must be exactly equal to the man's force pushing forward = 100 N.
the net force is 0 N since it is at a constant speed. and all forces up has to equal forces down so you subtract. so the answer is zero newtons (N)
Net force is 0 newtons because nothing is acting on the crate.
If the speed is constant, then the forces are balanced, i.e. they add up to zero.
100N of kinetic friction (backwards) is balancing the 100N push (forward).
If the horizontal velocity is constant, then the horizontal acceleration is zero,
and the net horizontal force is zero.
Relative to its surface, friction is constant (this is known as the friction constant). The speed is decreasing on an object because friction is acting on it over a period of time, not because friction is getting stronger.
Since the velocity is constant due to the fact that there are no external forces acting in the horizontal direction, if you neglect air resistance, therefore, the horizontal velocity of a projectile is constant.
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.
There is no unbalanced force acting on the box.
Sliding friction is when two objects slide across from one another. An example is sliding a book across a desk. It is also known as Kinetic friction.Sliding friction is friction caused by an object sliding over another surface.
If the speed is constant, then the group of forces acting on the object is balanced. So the portion of the force acting in the direction of the motion must be equal and opposite to the force of friction.
Relative to its surface, friction is constant (this is known as the friction constant). The speed is decreasing on an object because friction is acting on it over a period of time, not because friction is getting stronger.
Since the velocity is constant due to the fact that there are no external forces acting in the horizontal direction, if you neglect air resistance, therefore, the horizontal velocity of a projectile is constant.
If the object is moving along a horizontal surface with a constant acceleration,then the net vertical force on it is zero, and the net horizontal force on it is(the pushing force) minus (any kinetic friction force where it rubs the surface).The numerical value of that net force is(the acceleration) times (the object's mass).
No force is acting on it. Constant velocity means no acceleration, which means no force, from f=ma, no 'a' no force.
When an object moves at a constant velocity, all forces acting on it must add up to zero. In the case of the crate on a horizontal surface, where the pushing force is directly horizontal (not down and horizontal), then the human push force must be equal and opposite to the friction force. In the case where the plane is inclined and/or where the human force isn't directly along the surface, we need to know the angles, component-ize all forces (human push force, normal force, friction, and weight), balance forces in the direction perpendicular to the plane (so it will not sink through the plane), and balance forces parallel to the plane (if it is to move at a constant velocity).
As you push a cereal box across a tabletop, the sliding friction acting on the cereal box acts in the direction opposite of motion.
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.
There is no unbalanced force acting on the box.
Gravitational acceleration is a constant value for a celestial body, and doesn't depend on air resistance/friction. The value on Earth is constant anywhere on Earth, just like the value on Mars is constant anywhere on Mars. In practical,however, this is different. Air resistance lowers the value of gravitational acceleration.
Because F=ma, If an object is moving at a constant velocity(speed), then there can be no net force acting on the object. This means that there is a dispersive force i.e Drag or friction acting on the object equal to 2 but in the opposite direction to motion.
An object maintains a constant velocity when the net force acting upon that object is zero. Therefore, a force pushing against the object that exactly opposes the force(s) due to friction (in both magnitude and direction) will result in a net force of zero, and the object will maintain a constant speed.