Learn Kinematics in Physics Mechanics | For Beginners

Explore instantaneous speed and average speed, including how they are calculated from distance and time. Distinguish speed from velocity by noting that velocity includes direction.

Define velocity as displacement over time, including instantaneous velocity at a moment and average velocity over an interval, with direction as part of the vector.

Compute the average speed for linear motion with two halves at 60 km/h and 40 km/h by summing distances and dividing by total time, yielding 50 km/h.

Learn to compute average speed for straight-line motion with the first half distance at 60 km/h and the second half at 40 km/h, using total distance over total time.

Explore average velocity and velocity change in uniform circular motion by calculating displacement, time, and final minus initial velocity, highlighting how speed remains constant while direction changes.

Explore finding instantaneous velocity at points b, c, and d in a uniform circular motion, noting that speed remains constant while direction changes.

Learn what relative velocity means with respect to a reference frame and how to denote it, such as the velocity of a with respect to b.

learn two key relative-velocity equations to compute a body's velocity relative to another using a common reference frame, with a memorization shortcut and perspective-based addition or subtraction.

Explore solving a trains meeting problem with relative velocity and the normal method, using a reference frame to find the meeting time from a 45 kilometer initial separation.

Apply relative velocity: a cyclist moving at 4 m/s east sees rain at 3 m/s downward; resultant 5 m/s at angle arctan(3/4). Tilt the umbrella forward by that angle.

Explore the concept of acceleration as the rate of change of velocity, including instantaneous versus average acceleration, and how initial and final velocities over a time interval determine acceleration.

Analyze how a ball bounces off a wall, reversing its velocity during the 0.1 second impact. Compute the acceleration as the velocity change over time, illustrating instantaneous acceleration during contact.

Explore how acceleration arises in uniform circular motion by examining velocity changes as direction shifts while speed remains constant, and learn that acceleration points toward the circle's center.

Derive linear motion equations from a velocity-time graph, link the gradient to acceleration and the area under the graph to displacement, and apply constant-acceleration models through practice.

Learn how to choose the right constant-acceleration equation for linear motion, then compute displacement and final velocity from given initial velocity and acceleration over a 2-second interval.

Explore a linear motion problem with a hot air balloon and a ball, using relative velocity and reference frames to determine the time for the ball to land.

Learn to solve a ball dropped from rest using kinematics, form two equations for total time and final-second displacement, and cancel unknowns to find the travel time.

Cover the kinematics part, especially basic mechanics, in this course. Practice with example questions on your own and subscribe to our expert YouTube channel for more resources.