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A projectile of mass \( m \) is fired horizontally with an initial speed of \( v_0 \) from a height of \( h \) above a flat, desert surface. Neglecting air friction, at the instant before the projectile hits the ground, find the following in terms of \( m \), \( v_0 \), \( h \), and \( g \):

(a) The work done by the force of gravity on the projectile.  
\[ W = \,  \]

(b) The change in kinetic energy of the projectile since it was fired.  
\[ \Delta KE = \, \]

(c) The final kinetic energy of the projectile.  
\[ KE_f = \, \]

(d) Are any of the answers changed if the initial angle is changed?  
- [ ] Yes  
- [ ] No  

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Transcribed Image Text:A projectile of mass \( m \) is fired horizontally with an initial speed of \( v_0 \) from a height of \( h \) above a flat, desert surface. Neglecting air friction, at the instant before the projectile hits the ground, find the following in terms of \( m \), \( v_0 \), \( h \), and \( g \): (a) The work done by the force of gravity on the projectile. \[ W = \, \] (b) The change in kinetic energy of the projectile since it was fired. \[ \Delta KE = \, \] (c) The final kinetic energy of the projectile. \[ KE_f = \, \] (d) Are any of the answers changed if the initial angle is changed? - [ ] Yes - [ ] No **Need Help?** [Read It]
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