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What v-t graphs can tell us. +15 +10 +5. V (m/s). t (sec). 2. -5 -10 -15. 1. But it can also tell us displacement How far the object has gone (change in position) This is done by determining the area under a v-t curve. Direction: 0-2 seconds: going in positive direction
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What v-t graphs can tell us +15 +10 +5 V (m/s) t (sec) 2 -5 -10 -15 1 • But it can also tell us displacement • How far the object has gone (change in position) • This is done by determining the area under a v-t curve • Direction: • 0-2 seconds: going in positive direction • 2-5 seconds: going in negative direction • Velocity: • 0-2 seconds: going +10 m/s • 2-5 seconds: going -5 m/s
So what’s the object’s TOTAL displacement throughout the entire trip? • 20 m – 15 m = +5 m +15 +10 +5 V (m/s) t (sec) -5 -10 -15 10 m/s • Determine the object’s displacement from 2-5 seconds • -15 m 2 sec. Area = length x width During the time frame of 0-2 sec. the object traveled a total of +20 m from start to finish