#13 Speed and Momentum. #13 Speed and Momentum.

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Presentation transcript:

#13 Speed and Momentum

Speed Depends on Distance and Time speed – the rate at which an object moves speed depends on the distance traveled and the time it takes to get there. Average speed = total distance total time

Constant Speed Speed that does not change

The speed of a bicycle is the distance it travels divided by the time it takes. 5

Velocity Speed with direction A vector quantity [magnitude & direction]

(Its speed and direction remain the same.) A plane with a constant velocity of 600 km/h west moves in a straight line. (Its speed and direction remain the same.) A car going around a bend at a constant 30 mph has a constant speed, but its velocity is not constant. (Note the change in direction.) 7

V = D T D = V • T T = D V D V T

V = speed in the following equations

stop stop

Speed Distance Average speed Constant speed Velocity Constant velocity Word bank: Speed Distance Average speed Constant speed Velocity Constant velocity Acceleration Momentum