A body moves in the southern direction for 10 s at the speed of 10m/s.Itbthen started to move in the eastern direction at the speed of 20m/s for 10 s.Find average velocity,average speed,total displacement.
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distance towards south = 100m (10×10)
after that point it moves toward east
distance=200m(10×20)
Distance (actual distance)=200+100=300m
average speed=total distance / total time taken
=300/(10+10)=15m/s
Displacement(shortest distance)
Using Pythagoras theorem
(100)^2+(200)^2=(D)^2
10000+40000=(D)^2
Root 50000 = D
100 root5 m=Displacement
Average velocity= Displacement / total time
=100 root5 /(10+10)
=5 root5 m/s
after that point it moves toward east
distance=200m(10×20)
Distance (actual distance)=200+100=300m
average speed=total distance / total time taken
=300/(10+10)=15m/s
Displacement(shortest distance)
Using Pythagoras theorem
(100)^2+(200)^2=(D)^2
10000+40000=(D)^2
Root 50000 = D
100 root5 m=Displacement
Average velocity= Displacement / total time
=100 root5 /(10+10)
=5 root5 m/s
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