What is the effect of velocity in physics When a physical object moves in a straight line at a speed of 0.1m/s under the action of tensile force, the friction force is 10N. If the object still moves in a straight line at a speed of 0.5m/s, what is the horizontal tensile force? How much is the friction force? Why? (excluding air resistance) Like this problem, the friction force and the pull force should be the same, both are 10N, but the speed is not determined by the pull force. The friction force has nothing to do with the speed, but the friction force is equal to the pull force, so what determines the speed

What is the effect of velocity in physics When a physical object moves in a straight line at a speed of 0.1m/s under the action of tensile force, the friction force is 10N. If the object still moves in a straight line at a speed of 0.5m/s, what is the horizontal tensile force? How much is the friction force? Why? (excluding air resistance) Like this problem, the friction force and the pull force should be the same, both are 10N, but the speed is not determined by the pull force. The friction force has nothing to do with the speed, but the friction force is equal to the pull force, so what determines the speed

Because the object moves in a straight line at a speed of 0.1m/s on the horizontal table,
So the force on the object is balanced in the horizontal direction,
So the pull equals the frictional resistance
So tension = friction resistance = 10N
When the velocity reaches 0.5m/s, the object is still in a uniform linear motion, so it is still in a horizontal direction,
So the pull force is equal to the friction force, which is 10 n
Because the forces are balanced, but the speeds are different,
In the process of increasing velocity, the pulling force is greater than the friction force, because the object needs to accelerate to 0.5m/s
But when the speed of the object reaches 0 / 5 m / s, then the speed is uniform. So the force is balanced. At this time, the pulling force is equal to the friction force