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The motion of a freely falling body is an example of a:
uniformly accelerated motion
non-uniformly accelerated motion
uniform speed motion
uniform velocity motion
uniformly accelerated motion
The motion of a freely falling body under the influence of gravity is an example of uniformly accelerated motion. Because the gravitational acceleration (gтЙИ9.8m/s2) acting on the body remains constant throughout its fall (neglecting air resistance), the velocity of the body increases at a constant rate.
The motion of a freely falling body under the influence of gravity is an example of uniformly accelerated motion. Because the gravitational acceleration (gтЙИ9.8m/s2) acting on the body remains constant throughout its fall (neglecting air resistance), the velocity of the body increases at a constant rate.
Think of a ball dropped from a building: as it falls, it doesn't just travel at a steady speed; it gets progressively faster every second because gravity is constantly 'pushing' it to go quicker.
v=u+gt тАФ Velocity after time t with constant acceleration
s=ut+21тАЛgt2 тАФ Displacement after time t
According to Newton's second law of motion, a force produces an acceleration. In a free fall, the only force acting on the body is the gravitational force, FgтАЛ=mg, directed downward. Since F=ma, we have ma=mg, which results in a constant acceleration a=g. This constant acceleration satisfies the definition of uniform acceleration, where the change in velocity per unit time is constant.
Uniformly accelerated motion means the acceleration is constant.
The acceleration due to gravity (g) on Earth is approximately 9.8m/s2.
In vacuum or ideal conditions, the mass of the object does not affect its acceleration during free fall.
Calculating the height of a building by timing a falling object.
Predicting impact velocity in safety engineering.
Air resistance is usually ignored in standard textbook problems unless specified.
Non-uniformly accelerated motion (Option B) occurs when the magnitude or direction of acceleration changes (e.g., oscillating pendulum).
Uniform velocity motion (Option D) implies zero acceleration, which is not the case for free fall.
A is correct тАФ The motion of a freely falling body is an example of uniformly accelerated motion because the acceleration due to gravity is constant.
Remember that 'Uniform' in kinematics almost always refers to the acceleration or velocity staying constant; 'Uniformly Accelerated' means a=constant, not that v=constant!
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