15. Two objects of mass 4 kg and 3 kg approach each other at a right angle as shown above. The 4-kg mass moves along the +x - axis with an initial speed of 5 m/s, and the 3-kg mass moves in the +y - direction with a speed of 5 m/s. The two masses collide at the origin and stick together. Measured from the +x - axis, the angle of the resulting momentum of the two objects after the collision is most nearly +y 4 kg A) 30° above the + x – axis B) 37° above the +x - axis C) 45° above the +x- axis +x D) 53° above the + x - axis 3 kg E) 60° above the + x – axis

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Chapter1: Units, Trigonometry. And Vectors
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15. Two objects of mass 4 kg and 3 kg approach each other at a right angle as shown above. The
4-kg mass moves along the +x - axis with an initial speed of 5 m/s, and the 3-kg mass moves in
the +y - direction with a speed of 5 m/s. The two masses collide at the origin and stick together.
Measured from the +x - axis, the angle of the resulting momentum of the two objects after the
collision is most nearly
+y
4 kg
A) 30° above the +x – axis
B) 37° above the + x – axis
C) 45° above the + x – axis
D) 53° above the + x – axis
E) 60° above the + x – axis
-
+X
3 kg
Transcribed Image Text:15. Two objects of mass 4 kg and 3 kg approach each other at a right angle as shown above. The 4-kg mass moves along the +x - axis with an initial speed of 5 m/s, and the 3-kg mass moves in the +y - direction with a speed of 5 m/s. The two masses collide at the origin and stick together. Measured from the +x - axis, the angle of the resulting momentum of the two objects after the collision is most nearly +y 4 kg A) 30° above the +x – axis B) 37° above the + x – axis C) 45° above the + x – axis D) 53° above the + x – axis E) 60° above the + x – axis - +X 3 kg
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