Why is kinetic energy proportional to v2?
Hence, the proportionality of KE to v^2 comes from the consideration that changes in kinetic energy should be directly proportional to the work done on an object.
How does mass affect velocity down a ramp?
Weight affects speed down the ramp (the pull of gravity), but it’s the mass (and friction) that affects speed after a car leaves the ramp. Heavier cars have more momentum, so they travel further, given the same amount of friction.
Why does mass not affect velocity?
2 Answers. Mass doesn’t affect speed directly. It determines how quickly an object can change speed (accelerate) under the action of a given force. Lighter objects can do with weaker force to change speed by a given amount in a given amount of time.
Why does velocity increase with mass?
Therefore, it is safe to say that as the mass of an object increases so does its inertia. Mass and velocity are both directly proportional to the momentum. If you increase either mass or velocity, the momentum of the object increases proportionally.
How does mass affect speed on an incline?
Since the frictional force, like gravity and inertia, is proportional to the mass of a sliding object, all terms in the equation of motion for the body on an inclined plane are proportional to the mass. Thus, the mass should not affect how fast an object slides down a plane.
Will a heavier ball roll further?
But all other factors being equal, the heavier ball will eventually go faster, yes. It will accelerate with more force. It should be noted that the smaller ball will probably accelerate faster, since it has a smaller circumference. It will get off the line quicker.
Why does a ball travel faster on a steeper slope?
The force of gravity points straight down, but a ball rolling down a ramp doesn’t go straight down, it follows the ramp. This loss of gravitational potential energy shows up as an increase in kinetic energy. If the ball falls a farther distance vertically, it will have a greater kinetic energy and be going faster.
Why do heavier objects move slower?
The greater the weight (or mass) of an object, the more inertia it has. Heavy objects are harder to move than light ones because they have more inertia. Inertia also makes it harder to stop heavy things once they are moving.
What is the main conclusion of coin and feather experiment?
Conclusion. So the conclusion is that in presence of air net force acting downward reduces for feather and hence falls slower than coin. But in absence of air resistance, net downward force is just equal to force due to gravity which is same for both coin and feather and hence they fall down at the same rate.