What is the difference between uniform and non-uniform acceleration?

Uniform acceleration is when an object's velocity changes by the same amount in each unit of time. Non-uniform acceleration is when an object's velocity changes by different amounts in each unit of time.

Uniform acceleration occurs when an object experiences a constant force, such as gravity. The acceleration can be calculated using the formula a = (v-u)/t, where a is acceleration, v is final velocity, u is initial velocity, and t is time. For example, if a car starts from rest and reaches a velocity of 30 m/s in 5 seconds, the acceleration is a = (30-0)/5 = 6 m/s^2.

Non-uniform acceleration occurs when an object experiences a changing force, such as air resistance. The acceleration can still be calculated using the same formula, but the values of v, u, and t will change over time. For example, if a ball is thrown upwards, its acceleration will be non-uniform due to the changing force of air resistance. The acceleration at any given time can be found by calculating the slope of the tangent line to the velocity-time graph at that point.

In summary, uniform acceleration is when an object's velocity changes by the same amount in each unit of time, while non-uniform acceleration is when an object's velocity changes by different amounts in each unit of time due to a changing force.