AP Physics 1 by Kenneth Rideout

Author:Kenneth Rideout
Language: eng
Format: epub
Publisher: Barrons Educational Series
Published: 2020-06-12T00:00:00+00:00

(A)3.5 N · s

(B)2.5 N · s

(C)7.5 N · s

(D)9.5 N · s

7.A 1-kg object is moving with a velocity of 6 m/s to the right. It collides and sticks to a 2-kg object moving with a velocity of 3 m/s in the same direction. How much kinetic energy was lost in the collision?

(A)1.5 J

(B)2 J

(C)2.5 J

(D)3 J

8.A 2-kg mass moving with a velocity of 7 m/s collides elastically with a 4-kg mass moving in the opposite direction at 4 m/s. The 2-kg mass reverses direction after the collision and has a new velocity of 3 m/s. What is the new velocity of the 4-kg mass?

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