1. Two vectors have length V1 = 3.5 km and V2 = 4.0 km. What are the maximum and
ID: 2281271 • Letter: 1
Question
1.
Two vectors have length V1 = 3.5 km and V2 = 4.0 km. What are the maximum and minimum magnitudes of their vector sum?
2.
A projectile is launched at an angle of 30 degrees to the horizontal with a speed of 30 m/s. How does the horizontal component of its velocity 1.0 s after lauch compare with its horizontal component of velocity 2.0 s after launch ?
1.
Two vectors have length V1 = 3.5 km and V2 = 4.0 km. What are the maximum and minimum magnitudes of their vector sum?
2.
A projectile is launched at an angle of 30 degrees to the horizontal with a speed of 30 m/s. How does the horizontal component of its velocity 1.0 s after lauch compare with its horizontal component of velocity 2.0 s after launch ?
1. Two vectors have length V1 = 3.5 km and V2 = 4.0 km. What are the maximum and minimum magnitudes of their vector sum? 2. A projectile is launched at an angle of 30 degrees to the horizontal with a speed of 30 m/s. How does the horizontal component of its velocity 1.0 s after lauch compare with its horizontal component of velocity 2.0 s after launch ?Explanation / Answer
1. the minimum is when the vectors are in opposite directions and the maximum is when they are in the same direction.
Min = 0.5 km Max = 7.5 km
2--
There are no horizontal forces here! NONE!!
THEREFORE there is no horizontal acceleration !
Therefore there is no rate of change of horizontal velocity component !
Therefore the answer to this silly trick question is that there is no change in the horizontal velocity until the projectile hits something.
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