Forces

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# Forces - PowerPoint PPT Presentation

Forces. Speed - how fast a moving object it traveling Changing speed- when the speed of an object is different Constant speed- when the speed of an object stays the same. Gravity - force of attraction between objects due to their masses. Always pulls vertically down.

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## PowerPoint Slideshow about 'Forces' - jarvis

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Presentation Transcript

### Forces

Speed- how fast a moving object it traveling

• Changing speed- when the speed of an object is different
• Constant speed- when the speed of an object stays the same

Gravity- force of attraction between objects due to their masses. Always pulls vertically down.

• Vertical- straight up and down

Force- push or pull on an object

• Support force- force acting against gravity to hold the object up. Keeps object from falling to the center of the earth
• Elastic force- pushing or pulling force from an elastic object
• Air resistance- when air is pushing against an object
• Friction- force that opposes the motion of one object across another object. Tries to prevent slipping
• Tension Force- pulling force from ropes or strings

Total force- force that results from combining all the forces exerted on an object.

• Unbalanced force- forces on an object cause the net force to be other than zero. Causes a change in motion
• Balanced force- forces acting on an object that the net force to be zero. Causes no change in motion