....General Physics I...YouTube Videos: Motion, Vectors, Newton's Laws, Conservation Laws, Thermodynamics, Waves

[Introduction]   [Motion]   [Projectile Motion]   [Vectors]

[Newton's Laws]   [Friction]   [Circular Motion]   [Gravity]

[Conservation of Energy]   [Conservation of Momentum, Collisions]   [Statics, Torque]

[Rotation Kinematics and Dynamics]   [Fluids]   [Temperature, Ideal Gas, Expansion]

[Heat, Thermodynamics, Heat Engines]   [Simple Harmonic Motion]   [Sound]

 Motion Distance Displacement Scalar Vector Lecture (11 minutes) This video starts the discussion of Chapter 2 of OpenStax College Physics. The terms distance, displacement, scalar, and vector are briefly discussed. Speed, Velocity, Kinematics Lecture (8 minutes) This video discusses speed and velocity. The material is based on chapter 2 of OpenStax College Physics. Acceleration, Kinematics Lecture (9 minutes) This video discusses the definition and meaning of acceleration. This material relates to Chapter 2 of OpenStax College Physics. Kinematic Equations Constant Acceleration One Dimension Lecture (7 minutes) This video derives the four kinematic equations for constant acceleration in one dimension. This material relates to Chapter 2 of OpenStax College Physics. Concepts Related to Kinematic Equations Concepts (9 minutes) This video discusses concepts related to Kinematic Equations. Topics discussed are: displacement vs. distance; distance = rate times time; constant acceleration required; selection of value for starting position; acceleration due to gravity for object at top of its vertical motion. Motion Graphs ... Position, Velocity, Acceleration Example (5 minutes) This video presents two graphs of position vs. time. The value of the slope of the line on the position graph is used to produce the velocity graph. The slope of the line on the velocity graph is used to produce the acceleration graph. This material relates to Chapter 2 of OpenStax College Physics. Kinematic Equations Constant Acceleration Examples Lecture and Examples (13 minutes) This video discusses the four kinematic equations that apply when the acceleration is constant. Some concepts and some specific examples are discussed. This material relates to Chapter 2 of OpenStax College Physics. One Dimension Kinematics, Race Car Acceleration Example (5 minutes) A race car starts from rest and achieves a velocity of 250 miles per hour after traveling one-eighth of a mile. Assume the acceleration is constant. Determine the acceleration value. Kinematics, Car Catches Up With Truck Example (15 minutes) This example uses the kinematic equations to calculate how much time is required for one vehicle to catch up with another vehicle for the situation where the second vehicle had a higher initial speed but only the first vehicle accelerates. The first vehicle accelerates after a few seconds. Kinematics, Ball Leaves Helicopter Example (14 minutes) In this kinematics problem a ball and helicopter are moving upward. At a certain height above the ground the ball rolls out of the helicopter. The maximum height of the ball and the time to hit the ground are calculated. Kinematics, Two Objects Approaching Example (11 minutes) In this kinematics example two objects are approaching each other with different speeds. One object experiences friction and is slowing down. The time of the collision is calculated and the distance each object moves is calculated. Kinematics, Airplane Takeoff Acceleration and Runway Length Example (5 minutes) On a day when the wind speed is zero a plane starts from rest and lifts off after 38 seconds of constant acceleration. The airspeed required for lift off is 150 mph. The acceleration and minimum required length for the runway are calculated. Kinematics, Minimum Length of Runway for Plane Taking Off Into Wind and With Wind Example (6 minutes) An airplane starts form rest on a straight runway. There is a 30 mph wind parallel to the runway. The plane accelerates uniformly at 1.6 m/s2. The airspeed at lift off is 160 mph. The required length for the runway is calculated for the case that the plane takes off into the wind and for the case that the plane takes off while moving in the same direction as the wind. Car Constant Acceleration for Given Distance and Time Example (8 minutes) A car starts from rest and has constant acceleration. The elapsed time and distance traveled in a straight line are give. The final speed and acceleration are determined. A brief discussion is given on average velocity and distance traveled for half of the elapsed time. Vertical Motion Free Fall Lecture (8 minutes) This video discusses the concepts for vertical motion for which air resistance can be ignored. One example is worked in the video. This material relates to Chapter 2 of OpenStax College Physics. Vertical Motion of a Ball (Example 7 minutes) A ball is launched verticallly from ground level. The maximum height, time to move upward, time to fall back to the ground, and speed just before impact are determined. . Return to the top of this page. ... OR ... Return to physics.gpclements.com
 Projectile Motion Projectile Motion Lecture (14 minutes) This video briefly describes the concepts and solution methods for projectile motion problems. This material relates to Chapter 3 of OpenStax College Physics. Concepts for Motion in Two Dimensions, Vectors Concepts (5 minutes) This video discusses concepts for vectors and projectile motion (i.e. motion in two dimensions). Projectile Motion Example Example (6 minutes) This video shows how to calculate horizontal and vertical components for an object that is launched with a given speed and direction. The video provides a step by step solution to finding the range for the object. The time to the maximum height of the motion is used to find the time in the air. This material relates to chapter 3 of OpenStax College Physics. Projectile Motion Baseball 1 (Example 14 minutes) In this problem a baseball is struck by a bat at a given distance above home plate. The ball leaves the bat at a given angle. The ball crosses the outfield fence at a given height and the distance to the fence is given. The time for the ball to travel to the fence and the initial velocity of the ball are determined. Air resistance is ignored. Projectile Motion Baseball 2 Speed, Angle Unknown (Example 11 minutes) In this problem a baseball is struck by a bat at a given distance above home plate. The ball crosses the outfield fence at a given height and the distance to the fence is given. The time for the ball to travel to the fence is given. The initial velocity (magnitude and angle) of the ball are determined. Air resistance is ignored. Projectile Motion Calculate Launch Angle Max Height Time (Example 15 minutes) A ball is launched at a given speed at an unknown angle. The range of motion is given. The ball lands at the same height it was launched. Projectile Motion Dart and Apple 1 aka Hunter and Monkey (Example 9 minutes)A dart gun is aimed at an apple hanging in a tree. The dart is launched at 16 m/s at an angle of 30 degrees. The dart gun is 1.3 meters above the ground. The apple is 5.6 meters above the ground. Does the dart hit the apple? Projectile Motion General Dart and Apple 2 aka Hunter and Monkey (Example 11 minutes) A dart gun is aimed at an apple in a tree. When the dart is fired the apple starts falling to the ground. This video gives a general proof that the dart will hit the apple regardless of the speed of the dart. Projectile Motion Dart and Apple 3 Hit Ground Together aka Hunter and Monkey (Example 11 minutes) A dart gun is aimed at an apple hanging in a tree. The dart is launched at an angle of 30 degrees. The dart gun is 1.3 meters above the ground. The apple is 5.6 meters above the ground. Determine the launch speed for the dart such that the dart hits the apple at the instant the apple hits the ground. Projectile Motion, Ball Launched from Cliff; Distance, Time In Air, Given Example (11 minutes) In This projectile motion a ball is thrown from a cliff with a known height. The horizontal distance traveled and the time in the air are given. The launch angle and speed are determined. Projectile Motion, Basketball Shot Example (8 minutes) This video shows how to calculate the initial speed of a basketball that is launched at a given angle, from a given height above the floor, and given the height of the basketball goal. Air resistance is ignored. The horizontal and vertical equations are used to solve for the launch speed. The maximum height of the basketball is also calculated. Projectile Motion Example, Height, Time in the Air, Range Example (7 minutes) In this projectile motion example the launch velocity is given. The maximum height, the time in the air, and the range are calculated. Air resistance is ignored. The ball is launched over level ground. Projectile Motion, Two Balls Collide in the Air, Max Height, Time Example (9 minutes) In this projectile motion example one ball is launched with a given speed and angle. The second ball is launched straight upward at a given speed. The video shows how to calculate the time delay between the launch of ball 1 and ball 2 such that the balls hit at the maximum height of ball 1. This is not a momentum problem, it is a kinematics problem. Air resistance is ignored. . Return to the top of this page. ... OR ... Return to physics.gpclements.com