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On the way to class, you walk north and then west such that your resultant displacement is 290 m in a direction 250 west of nor...Question
On the way to class, you walk north and then west such that your resultant displacement is 290 m in a direction 25deg west of north. Your average velocity is 2.0 m/s in the same direction as the displacement.
Calculate (a) your walking time and (b) your average speed.
Calculate (a) your walking time and (b) your average speed.
Answers
MathMate
Magnitude of displacement (vector)
=290m
velocity=2.0m/s
(a)
Walking time = distance /speed
= 290m / 2.0m/s
= 145s
(b)
Northerly distance
= 290cos(25°)
= 262.8m
Westerly distance
= 290sin(25°)
= 122.6m
Total distance
= 385.4m
Average speed
= 385.4m / 145s
= 2.66 m/s
=290m
velocity=2.0m/s
(a)
Walking time = distance /speed
= 290m / 2.0m/s
= 145s
(b)
Northerly distance
= 290cos(25°)
= 262.8m
Westerly distance
= 290sin(25°)
= 122.6m
Total distance
= 385.4m
Average speed
= 385.4m / 145s
= 2.66 m/s