rock.freak667 said:At terminal velocity the resultant force on it is zero, so find the expression for the resultant force and equate to zero.
Air resistance is a force that acts against the motion of an object through the air. It is caused by the friction between the object and the air molecules it encounters.
Air resistance can slow down the speed of an object in free fall and can also cause the object to deviate from its straight path. This is because the force of air resistance is proportional to the square of the object's velocity.
Air resistance is calculated using the equation F = 0.5 * p * v^2 * A * C, where F is the force of air resistance, p is the density of air, v is the velocity of the object, A is the cross-sectional area of the object, and C is the drag coefficient.
Air resistance can be reduced by decreasing the object's velocity, increasing its surface area, or using a more streamlined shape. Additionally, objects with a larger mass experience less air resistance than lighter objects.
Ignoring air resistance in free fall calculations can lead to inaccurate results. This is because air resistance can significantly impact the motion of an object and can cause it to fall slower than expected. Considering air resistance allows for more precise and realistic calculations.