11.16 A projectile enters a resisting medium at x = (0 with an initial ve Vo = 900 ft/s and travels 4 in. before coming to rest. Assumin the velocity of the projectile is defined by the relation v vo where v is expressed in ft/s and x is in feet, determine (a) the acceleration of the projectile, (b) the time required for the p tile to penetrate 3.9 in. into the resisting medium.
11.16 A projectile enters a resisting medium at x = (0 with an initial ve Vo = 900 ft/s and travels 4 in. before coming to rest. Assumin the velocity of the projectile is defined by the relation v vo where v is expressed in ft/s and x is in feet, determine (a) the acceleration of the projectile, (b) the time required for the p tile to penetrate 3.9 in. into the resisting medium.
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Transcribed Image Text:11.16 A projectile enters a resisting medium at xr = 0 with an initial velocity
Vo = 900 ft/s and travels 4 in. before coming to rest. Assuming that
the velocity of the projectile is defined by the relation v = vo - kx,
where v is expressed in ft/s and x is in feet, determine (a) the initial
acceleration of the projectile, (b) the time required for the projec-
tile to penetrate 3.9 in. into the resisting medium.
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