Physics- Mechanics 2 3.0 / 5 based on 2 ratings ? PhysicsForces and MotionIGCSENone Created by: EliCreated on: 12-03-13 02:27 What is a force? A force is a push or pull on an object 1 of 21 What causes a change in motion? An unbalanced force 2 of 21 What is force measured in? Newtons 3 of 21 What do vectors indicate? Size and direction of force 4 of 21 How can you get a resultant force? By finding the difference between forces 5 of 21 When does the object stay stationary or have a constant speed? When all the forces cancel out 6 of 21 What is tension? Stretching force 7 of 21 What is compression? Squeezing/squashing force 8 of 21 What is the relationship between Hooke's Law? Force and the stretch of a spring 9 of 21 What happens when to pressure when you have a smaller area? More pressure 10 of 21 What happens to pressure when you have a larger area? Less pressure 11 of 21 What does a manometer measure? The difference between atmospheric pressure and gas pressure 12 of 21 What does a barometer measure? Measures the atmospheric pressure (height of the mercury inside the glass) 13 of 21 What is a moment force? The turning effect 14 of 21 When is there a greater turning effect? Further from the pivot point and greater force applied 15 of 21 When is there less of a turning effect? Closer to the pivot point and less force applied 16 of 21 What is the center of mass? The point at which all plumb lines meet 17 of 21 What is work? Force exerted over a distance 18 of 21 What is power? Rate at which work is done 19 of 21 How can you increase the amount of work being done? Moving something heavier and a farther distance 20 of 21 How can you increase power? Doing something faster(taking less time to do) and using more strength to push something 21 of 21
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