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12 Cards in this Set
- Front
- Back
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Micrometer Screw Gauge use |
To measure very small distances. |
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Volume of an irregular object |
Put object into cylinder of water When object is added, it displaces water, making water level rise. Measure rise in water This is the volume |
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Equation for distance with constant acceleration |
(Final speed + Initial speed)/2 x Time |
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Equation for Acceleration |
(Final speed - Initial Speed)/2 |
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Name 3 Vector Quantities |
Acceleration, Velocity, Momentum, Force eg |
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Describe Terminal Velocity |
A falling body will stay at constant velocity, and downward acceleration is constant as air resistance is equal to gravity |
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Mass vs Weight |
Mass: Amount of matter an object contains, and is a property that resists change is motion Weight: force of gravity acting on an object, measured in newtons Weight= Mass x Gravity |
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Effects of forces |
Can produce a change in shape or size of a body Give an acceleration or deceleration If there is no resultant force acting upon a body, it remains at rest or continues at a constant speed in a straight line |
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Eq. Hooke's Law |
Load (N) = Spring Constant x extension F = ke |
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Eq. Moment |
Moment (Nm) = Force (N) x Distance from pivot (m) |
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Moment in equillibrium |
Clockwise moment = anticlockwise moment |
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Principle of conservation of momentum |
When bodies in a system interact, total momentum remains constant provided no external force acts on the system MaUa + MbUb = MaVa + MbVb |
