So for every second the wind starts gusting, the boat is going 4 m/s faster.
So for every second the wind starts gusting, the boat is going 4 m/s slow, OR is going 4 m/s faster in the opposite direction.
Displacement Graph: AB: Got to Clackamas and realized we'd forgotten Grace. BC: Went back home to pick her up CD: Went to school DF: Stayed at school for the day Speed Graph: AB: accelerated BC: slowed to a stop CD: accelerated (maybe got on freeway) DF: traveled at a constant speed
At 30 seconds, car's speed is 20 m/s. Acceleration is 1 m/s/s from 0 to 20 seconds. Deceleration is 1 m/s/s (or -1m/s/s acceleration). Line is curved because acceleration is not constant (slope of line changes throughout).
750 m/s = 900 km/hr = 559 miles per hour kg m/s = SI unit for momentum Practical application: it will take a lot more force (energy) to slow or stop a cargo plane than it would a fly because of the difference in mass.
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