An object ejects 12% of its initial mass at time t = 0 along the negative x-axis. The ejected mass has a speed of 2.0 m/s. Shortly after, it ejects another 12% of its initial mass along the negative y-axis with the same speed.
(a) Assume the object started from rest and calculate the magnitude and direction of its final velocity.
magnitude m/s
direction ° counterclockwise from the +x-axis
(b) If the object started at an initial speed
v = (4.0 m/s, 6.0 m/s),
would the change in speed of the object be different than the change in speed in part (a)?
Yes
No
(c) If the object ejected 24% of its initial mass at time
t = 0
in the direction opposite to the direction found in part (a), what would be the magnitude and direction of its final velocity? (Assume the mass is ejected with a speed of 2.0 m/s and the object is initially at rest.)
magnitude m/s
direction ° counterclockwise from the +x-axis
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