An 8.0-g bullet is suddenly shot into a 4.0-kg block,at rest on a frictionless horizontal surface,as shown in the figure.The bullet remains lodged in the block.The block then moves against a spring and compresses it by 8.9 cm.The force constant (spring constant)of the spring is $1400 \mathrm {~N} / \mathrm { m }$ What is the magnitude of the impulse on the block (including the bullet inside)due to the spring during the entire time interval during which the block compresses the spring?
A)13 N ∙ s
B)12 N ∙ s
C)10 N ∙ s
D)8.3 N ∙ s
E)6.7 N ∙ s

Question

An 8.0-g bullet is suddenly shot into a 4.0-kg block,at rest on a frictionless horizontal surface,as shown in the figure.The bullet remains lodged in the block.The block then moves against a spring and compresses it by 8.9 cm.The force constant (spring constant)of the spring is $1400 \mathrm {~N} / \mathrm { m }$ What is the magnitude of the impulse on the block (including the bullet inside)due to the spring during the entire time interval during which the block compresses the spring? 
A)13 N ∙ s 
B)12 N ∙ s 
C)10 N ∙ s 
D)8.3 N ∙ s 
E)6.7 N ∙ s

Quizplus · Accepted Answer

The Answer of An 8.0-g bullet is suddenly shot into a 4.0-kg block,at rest on a frictionless horizontal surface,as shown in the figure.The bullet remains lodged in the block.The block then moves against a spring and compresses it by 8.9 cm.The force constant (spring constant)of the spring is $1400 \mathrm {~N} / \mathrm { m }$ What is the magnitude of the impulse on the block (including the bullet inside)due to the spring during the entire time interval during which the block compresses the spring? 
A)13 N ∙ s 
B)12 N ∙ s 
C)10 N ∙ s 
D)8.3 N ∙ s 
E)6.7 N ∙ s

An 80-G Bullet Is Suddenly Shot into a 4 1400 N/m1400 \mathrm {~N} / \mathrm { m }1400 N/m

An 80-G Bullet Is Suddenly Shot into a 4 $1400 \mathrm {~N} / \mathrm { m }$