a. A 1,500 kg tank fires 10kg shell at 200m/s, 25 degrees above the horizontal.

Question

a. A 1,500 kg tank fires 10kg shell at 200m/s, 25 degrees above the horizontal. Find the recoil velocity of the cannon across the level ground.

b. If momentum in a 2 body collision is conserved then kinetic energy must be conserved.
True/False

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f. At what location does an artificial Earth satelite in a elliptical orbit have its greatest speed?

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j. define: impulse, stress strain and each type of modulus

Explanation / Answer

the mass of the shell is m = 10 kg the mass of the cannon is M = 1500 kg the velocity of the shell at an angle 25 degrees abovethe horizontal is = 200m/s the velocity of the shell along the horizotal is Vx= (200 m/s )* cos 25                                                                          =181.26 m/s let the horizontal velocity of the cannon is Vx' then we have the momentum conservation equation as                        0 = MVx' + mVx                     Vx' = -( mVx ) / M                            =-1.208 m/s                     Vx' = -( mVx ) / M                            =-1.208 m/s

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