You are to launch a rocket, from just above the ground, with one of the followin

Question

You are to launch a rocket, from just above the ground, with one of the following initial velocity vectors:

1 vvec0 = 20ihat + 70 jhat
2 vvec0 = -20ihat + 70jhat
3 vvec0 = 20ihat - 70jhat
4 vvec0 = -20ihat - 70jhat

In your coordinate system, x runs along level ground and y increases upward.

(a) Rank the vectors according to the launch speed of the projectile, greatest first (use only the symbols > and = , for example 1>2=4>3)?

(b) Rank the vectors according to the time of flight of the projectile, greatest first?

Explanation / Answer

The given vectors V1 = 20i + 70j                             V2 = -20i + 70j                             V3 = 20i - 70j                             V4 = -20i -70j   The magnitude of the given vectors all are same so all have same vectors then V1:1,V2:1,V3:1,V4:1 But each vector in different coordinate. The given vectors V1 = 20i + 70j                             V2 = -20i + 70j                             V3 = 20i - 70j                             V4 = -20i -70j   The magnitude of the given vectors all are same so all have same vectors then V1:1,V2:1,V3:1,V4:1 But each vector in different coordinate.

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