Solved Physics Problems on Momentum and Impulse

12/14/2017 HW# VI-CH7
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Current Score : 93.75 / 100 Due : Sunday, December 17 2017 07:00 PM EST
1. 12.5/12.5 points | Previous AnswersGiancoli7 7.P.011.
A 13 g bullet traveling 230 m/s penetrates a 2.0 kg block of wood and emerges cleanly at 167 m/s. If
the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges?
0.4095 m/s
2. 6.25/12.5 points | Previous AnswersGiancoli7 7.P.018.
A tennis ball of mass m = 0.055 kg and speed v = 55 m/s strikes a wall at a 45° angle and rebounds
with the same speed at 45°. What is the impulse given to the wall?
Magnitude
4.278 N·s
Direction
HW# VI-CH7 (Homework)
EMILY BRODSKY
110, section 02, Fall 2017
Instructor: DESIRE MIESSEIN
WebAssign
in the direction of the ball's original motion
opposite the direction of the ball's original motion
normal and away from the wall
normal and into the wall
in the direction of the ball's final motion
opposite the direction of the ball's final motion