A projectile of mass m is fired horizontally with an initial speed of vo 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, vo, 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. AKE = (c) The final kinetic energy of the projectile. KE = (d) Are any of the answers changed if the initial angle is changed? O Yes O No
A projectile of mass m is fired horizontally with an initial speed of vo 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, vo, 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. AKE = (c) The final kinetic energy of the projectile. KE = (d) Are any of the answers changed if the initial angle is changed? O Yes O No
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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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