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# Weight And Terminal Velocity

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### Transcript

• 1. Weight and terminal velocity
• 2. objectives
• calculate an object’s weight
• describe what terminal velocity is and how it comes about
• draw and interpret velocity–time graphs for objects that reach terminal velocity
• 3. starter
• what is the odd one out?
• explain why.
• kg g N lbs mg st oz
• 4. Gravity and weight
• on Earth, there is 10N force on each 1kg mass
weight (N) = mass (kg) x gravity (N/kg) what is your mass? what is your weight?
• 5. 2 minute quick questions
• 6. speed and drag
• 7.
• http://www.bbc.co.uk/learningzone/clips/why-does-a-human-have-a-different-terminal-velocity-to-a-mouse/8751.html
• 8. Terminal Velocity
• 9.
• 10.
• exam q
• 11. to finish with
• The _______________ of an object can be calculated using the equation: W = m x g. On Earth, this means the weight is 10 times the mass, as the Earth’s gravitational field _______________ is 10 N/kg. The faster a body moves through a fluid, the _______________ the frictional force on the object. A body falling through a fluid will _______________ at first because of its weight. This will increase the friction, so the resultant force will _______________ . It will continue to accelerate until it reaches a terminal velocity when the weight is balanced by the _______________ .
• friction greater reduce strength weight accelerate