| 1 | For constant motion: |  |
‘v’ is the velocity in m/s, ‘s’ is the distance or displacement in meters and ‘t’ is the time in seconds |
| 2 | For acceleration ‘a’ | |
u is the initial velocity, v is the final velocity and t is the time. |
| 3 | Graph | Area of a rectangular shaped graph = base × height.
Area of triangular shaped graph =½ × base × height |
In velocity-time graph the area under the graph is the total distance covered by an object. |
| 4 | Weight and mass | ݃ w = m * g | w is the weight in newton (N), m is the mass in kg and g is acceleration due to gravity = 10 m/s2 |
| 5 | Density ‘ρ’ in kg/m3 | |
m is the mass and V is the volume |
| 6 | Force F in newton (N) | F = m * a | m is the mass and a is the acceleration |
| 7 | Terminal Velocity | weight of an object (downward) = air resistance (upwards) | |
| 8 | Hooke’s Law | F = k * x | F is the force, x is the extension in meters and k is the spring constant. |
| 9 | Moment of a force in N.m | moment of force = F * d | F is the force and d is the distance from the pivot |
| 10 | Law of moment or equilibrium: |
Total clockwise moment = Total anti clockwise moment => F1 * d1 = F2 * d2 | |
| 11 | Work done W joules (J) | W = F * d | F is the force and d is the distance covered by an object |
| 12 | Kinetic Energy Ek in joules (J) | |
m is the mass(kg) and v is the velocity (m/s) |
| 13 | Potential Energy Ep in joules (J) | |
m is the mass (kg) and g is the acceleration due to gravity and h is the height from the ground. |
| 14 | Law of conservation of energy: | |
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| 15 | Power in watts (W) | |
Power is the rate of doing work |
| 16 | Pressure p in pascal (Pa) | |
F is the force in newton(N) and A is the area in m2 |
| 17 | Pressure p due to liquid | |
ρ is the density in kg/m3 , g is the acceleration due to garvity and h is the height or depth of liquid in meters. |
| 18 | Atmospheric pressure | |
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