Forces and Friction: How Forces Change Motion

Apuntes

lesson 5 forces what is a force? - A force is a push or pull that one object exerts on another. Foreg. → Boy exerts pushing force on a cart/boy exerts pulling force on a cart * Effects of Forces A force can: 1. move a stationary object 2. stop a moving object 3. change the speed of a moving object 4. change the shape of an object. 5. change the direction of a moving object Forces can be observed if unbalanced forces act on an object. A stationary object will remain stationary if there are no forces acting on it → Forces acting on the object will balance each other out, so nothing to be observed. which of the following is not an example of the effect of a force? (1) A plant making food using sunlight (2) A magnet attracting an iron paper cup (3) Araling ball coming to a stop after being kicked (4) A spring bouncing upwards after being compressed and released. Types of Forces (2) | contact | non-contact | | --- | --- | | Frictional force | Gravitational force | | Elastic Spring Force | Magnetic force | Frictional Force (notes) (Define) What is a frictional force? → Friction is the force that opposes motion between two surfaces which are in contact with each other. ![img-0.jpeg](img-0...