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Week 5
force and motion
Question | Answer |
---|---|
Drag | resistance by friction from air or water moving over a surface |
Equilibrium | balance |
Deceleration | slowing down |
Newton | a unit of force |
Pivot | a fixed point supporting something that turns or balances |
Axis | an imaginary line that an object spins or revolves around |
Pressure | the force per unit area exerted on an object |
energy | in physics, the ability to work |
impulse | something that changes the momentum of an object. As a measurement, it equals the objects mass multiplied by its velocity. For spinning things there is a related idea called angular momentum. |
projectile | an object that has been put into motion in the air by some force. |