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13 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What is average speed and instantaneous speed? |
1. Rate of change of distance 2.rate at which distance is changing |
Dist |
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What is average and instantaneous velocity? |
1.rate of change of displacement. 2.rate at which distance is changing. |
Not dist |
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What is average acceleration and instantaneous acceleration? |
1. Rate of change of velocity. 2.rate at which velocity is changing. |
Not dist or displacement |
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(Equations of motion) When x is missing ? |
V=u+at |
V is the subject |
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(Equations of motion) Without u? |
X=vt-1/2at^2 |
1/2 |
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(Equations of motion) Without v? |
X=ut+1/2at^2 |
1/2 |
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(Equations of motion) Without a? |
X=1/2(u+v)t |
t is last |
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(Equations of motion) Without t? |
V^2=u^2+2ax |
V^2 is the subject |
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Equation for linear momentum |
P=mass x velocity |
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Ni (Newton’s first law)? |
An object continues moving at a constant speed in a straight line, or remains at rest, unless acted upon by a resultant force. |
Objects stay as they are |
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Nii (Newton’s second law) |
The rate of change of an objects momentum is proportional to the resultant force acting on it. |
Proportion |
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Niii (Newton’s third law) |
If a exerts a force on b then be will exert an equal but opposite force on a. |
a<->b |
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Conservation of momentum |
The vector sum of momentum in a system stays constant provided there is no external resultant forces acting on that system. |
M1u1+m2u2=m1v1+m2v2 |
