Physics Review Unit 4 2D Projectile Motion | Concordia University Wisconsin

University:
Concordia University Wisconsin
Course:
PHYS 1514 | General Physics I
Academic year:

2019
Views:

262

Pages:

3
Author:

fynegafn8ps

Unit 4: 2D Projectile Motion - Projectile motion occurs when an object is fired or shot into the air and then free fall occurs as a result of gravity. Gravity only acts in the y-axis and there are no forces in the x-axis. Therefore. There is no acceleration in the x-axis hence horizontal velocity remains constant while vertical velocity is accelerated. - Trajectory: The path of a projectile through space. - Horizontally Launched Projectiles - The object doesn’t accelerate horizontally after the initial launch, horizontal forces are no longer acting the object. - - The velocity of the object increases as the force of gravity causes the object to accelerate downwards. - The parabolic shape of the trajectory is a result of both the constant horizontal velocity and the uniform vertical acceleration. Angled Launches - The initial velocity has both a vertical and horizontal component when the projectile is launched at an angle - The velocity of the object is the same as it moves upwards and then downwards. - The maximum height of the object is when the vertical velocity is at zero and. - A projectile launched at 90 degrees will be able to reach its highest height possible. A projectile launched at 45 degrees will be able to reach its greatest range possible. - Unit 5: Momentum Momentum: Momentum describes a mass in motion and measures how much force is required to stop it. Momentum is a vector quantity that all moving objects possess. An object’s momentum would change if its velocity changes (acceleration occurs). If an object undergoes an acceleration, it must be experiencing a force. A force will cause a change in momentum. Impulse: Applying an external force to an object over a time interval results in a change in momentum. The impulse experienced by the object equals the change in momentum of the object. Impulse Momentum Theorem