Question

SECTION 3 (40 points) A projectile of mass 6M is fired at a speed of 400 m/s at an angle of 60° above the horizontal. At the top of the trajectory, it explodes into two equal mass pieces labeled A and B. Piece A is projected vertically downward at 300 m/s. Answers to the below can be given in terms of M if necessary. a. What is the velocity (magnitude and direction) of piece B? b. What is the impulse (magnitude and direction) of piece A? c. If the explosion took one-tenth of a millisecond, what was the average force (magnitude and direction) on piece B? d. Why can the effect of gravity be ignored during the explosion? Explain. To do this, find the magnitude of the impulse on piece B due to gravity as a fraction of the magnitude of the impulse on it due to the explosion.

          SECTION 3 (40 points)
A projectile of mass 6M is fired at a speed of 400 m/s at an angle of 60° above the
horizontal. At the top of the trajectory, it explodes into two equal mass pieces
labeled A and B. Piece A is projected vertically downward at 300 m/s. Answers to
the below can be given in terms of M if necessary.
a. What is the velocity (magnitude and direction) of piece B?
b. What is the impulse (magnitude and direction) of piece A?
c. If the explosion took one-tenth of a millisecond, what was the average force
(magnitude and direction) on piece B?
d. Why can the effect of gravity be ignored during the explosion? Explain. To do
this, find the magnitude of the impulse on piece B due to gravity as a fraction of
the magnitude of the impulse on it due to the explosion.

$SECTION 3 (40 points) A projectile of mass 6M is fired at a speed of 400 m/s at an angle of 60° above the horizontal. At the top of the trajectory, it explodes into two equal mass pieces labeled A and B. Piece A is projected vertically downward at 300 m/s. Answers to the below can be given in terms of M if necessary. a. What is the velocity (magnitude and direction) of piece B? b. What is the impulse (magnitude and direction) of piece A? c. If the explosion took one-tenth of a millisecond, what was the average force (magnitude and direction) on piece B? d. Why can the effect of gravity be ignored during the explosion? Explain. To do this, find the magnitude of the impulse on piece B due to gravity as a fraction of the magnitude of the impulse on it due to the explosion.$

Added by Julio K.

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