Speed and Velocity.

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Presentation transcript:

Speed and Velocity

An interval An interval is a space between two objects, points, times, or other units of measurement. An Interval

Speed Speed is how fast an object moves in a time interval.

Speed and Velocity Velocity is speed with direction The magnitude is the length of the line, representing how fast Magnitude Direction

What is motion measured in? Speed Descriptor: s Units: miles/hour (mi/hr) meters/second (m/s) kilometers per hour (km/hr)

What is motion measured in? Time Descriptor: t Units: Seconds (s) Hours (hr) Minutes (min)

What is motion measured in? Distance Descriptor: d Units: Meters (m) Miles (mi) Centimeters (cm) Kilometers (km)

Calculating Speed Speed = distance divided by time s = d ÷ t

Calculating distance if given speed and time Distance = speed times time d = s x t

Calculating time if given distance and speed Time = distance divided by speed t = d ÷ s

Shortcut method Distance (d) Time Speed t s Distance = speed x time Speed = distance ÷ time Time t Speed s Time = distance ÷speed