When a balanced or unbalanced force is applied on an object it changes the position, direction and speed of the object. This change in motion can be measured and visually represented on a graph.
Changes in speed and direction:
What is force? Types of forces Balanced/unbalanced forces Net force= mass X acceleration |
This video explains how a force is a push or pull and how gravity is a force. It uses arrows to represent vectors.
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Force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity.
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This video explains how balanced and unbalanced forces acting on an object change the speed or direction of motion.
This video explains how to calculate speed using distance and time. It gives examples of how to create distance-time and velocity time graphs. It reviews work and potential and kinetic energy.
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This video explains that balanced forces will cause an object to remain stationary and unbalanced forces will cause and object to move.
These videos explain how to calculate speed using the formula in the triangle. Speed is also known as velocity, and it is calculated by dividing the distance traveled by the amount of time it took to cover that distance. This is expressed as a standard equation: S = D / T. It is important to include the units in the answer.
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Understanding Graphs
This video relates how to calculate speed to a distance-time graph and demonstrates velocity-time graphs.
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This video provides information about interpreting the motion based on the position vs time graph, the velocity vs time graph, and the acceleration vs time graph.
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Different types of machines are used to move objects and the machines change the amount of force required to move the object.
This video explains what a pulley is, the different combinations, and gives examples of pulleys in everyday life.
This video explains how inclined planes assist in moving heavy objects by decreasing the force by increasing the distance over which the force is applied.
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This video explains the advantage of using an inclined plane and knows the amount of force needed to move a load is changed.
This video explains the advantage of using an inclined plane and how the amount of force needed to move a load is changed.
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When an object moves in a straight line at a steady speed, you can calculate its speed if you know how far it travels and how long it takes. This equation shows the relationship between speed, distance traveled and time taken.