How does the force vector on the cannonball in projectile change throughout the cannonball's trajectory?  height y= 0 the angle of the projectile to 30o Initial velocity  = 18m/s. Select 2 correct answer(s)   There is no force in the horizontal direction.   There is no force in the vertical direction.   The ball is not acted upon by any force.   A constant downward force acts on the projectile.

Glencoe Physics: Principles and Problems, Student Edition
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Author:Paul W. Zitzewitz
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Chapter9: Momentum And Its Conservation
Section9.2: Conservation Of Momentum
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How does the force vector on the cannonball in projectile change throughout the cannonball's trajectory? 

height y= 0

the angle of the projectile to 30o

Initial velocity  = 18m/s.

Select 2 correct answer(s)
 

There is no force in the horizontal direction.

 

There is no force in the vertical direction.

 

The ball is not acted upon by any force.

 

A constant downward force acts on the projectile.

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