![]() Something must move in the opposite direction as the force exerted upon it.Įx. Pushing a cart Negative Work a force applied opposite to motion Something must move in the same direction as the force exerted on it.Įx. Positive Work Force and displacement are in the same direction When work is done a transfer is also done. Work Force exerted on an object that causes it to move The same amount of work can be completed over a longer distance with less force. Negative vector Flips the direction of a vector Distance The length of a path between two locations Work formula work = force x distance Is velocity scalar or vector? velocity is a vector Recognize that it has no specific direction Scalar A physical quantity that has magnitude only. ![]() Magnitude the size or quantity of something Direction the path that a moving object follows Is speed a vector? No, it is a scalar because it does not tell direction. Two vectors are equal if when they have the same magnitude and direction. The length of the vector represents the magnitude while the arrow indicates direction. Applied Force force that is applied to an object by another person or objectĮx: A bulldozer moving dirt Vectors quantities that have both a magnitude and a direction Turning a corner even if your going the same speed. Going uphill on a rollercoaster Neutral Acceleration No change in speed but possible change in directionĮx. ΔV/T)ĭeceleration is NEGATIVE Positive Acceleration speeding upĮx: Going downhill on a rollercoaster Negative Acceleration slowing downĮx. How quickly something is moving or BEING DONE.ĭistance/time Velocity Speed in a given directionĭistance/time + direction Acceleration The rate at which an object changes speed or direction(velocity).įinal speed - Initial speed/time (aka. Speed The distance an object travels per unit of time Friction The force that causes a moving object to slow down when in contact with another object. When a fireman turns on a hose and is knocked backwards. A rocket blasting off from a launch pad. The size of the force on 1 object equals the size of the force on the 2nd object Examples of Newton's 3rd Law of Motion - When a swimmer pushes back on the water and moves forward. Newton's 3rd Law of Motion - The Law of Action-Reactionįor every action there is an equal and opposite reactionįorces come in pairs when acting on 2 interacting objects It requires less force to move a bicycle than a motorcycle. Several dogs pulling on a sled cause it to accelerate more quickly than one. If the force of gravity did not exist, the ball would keep travelling at a constant speed until it was affected by an object or if another person touched it.Newtons unit of force Examples of Newton's 2nd Law of Motion - A full grocery cart requires more force to push than an empty cart. When a ball is thrown and is in mid-air, the only force acting upon it is the force of gravity. This concept applies to most sports and is crucial in understanding sports movement and techniques. Inertia keeps an object moving in motion in a straight line at a constant speed or a stationary object at rest. ![]() The law of inertia is easily noticeable and applicable in all sorts of situations, including in sports. ![]() Newton’s First Law of Motion: A body will remain at rest or keep moving at a constant speed unless it is acted upon by a force (law of inertia). Sports are better understood when having a firm knowledge of these three laws, and as we better understand them, it makes more and more sense why certain actions and motions behave certain ways. Whether through walking to school or sitting on a chair, these laws are in effect everywhere. We see the application of Newton’s Three Laws of Motion in our daily life and activities. Sir Isaac Newton developed three important principles related to dynamics. ![]()
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