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14 Cards in this Set
- Front
- Back
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Newton’s third law |
When a body A exerts a force on body B, then B exerts an equal and opposite force on A |
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Force and momentum equation |
Change in momentum= force x change in time |
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In momentum time graph what does the gradient equal |
Resistant force upon object |
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Fnet equation |
Fnet=mass x acceleration Fnet=mass x change in velocity over time |
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Principle of conservation of momentum |
The vector sum of momentum of the bodies in an isolated system is constant |
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Work done equation |
Wd= power x time Wd= force x displacement Wd= energy transferred |
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Suvat equations |
V= u + at S= ut + 1/2at^2 S= 1/2(u + v)t V^2= u^2 + 2as S= vt - 1/2at^2 |
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More work done |
W= F x change in H = mgh Elastic strain W= 1/2fx W= 1/2 F^2/k W= 1/2kx^2 |
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Change in Kinetic energy |
Change in KE= 1/2m(v^2-u^2) |
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Work energy relationship |
Force x distance = 1/2m(v^2-u^2) |
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Work input |
WI= gain in KE + gain in internal KE |
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Force |
Force =kx |
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Work done in stress strain |
1/2 stress x strain |
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Power (2) |
Power= o’(4pieR^2)T^4 Power= energy per proton x number of protons per second Power= intensity x area |
