The figure below shows a bullet of mass 190 g traveling horizontally towards the east with speed 405 m/s, which strikes a block of mass 3.0 kg that is initially at rest on a frictionless table.

After striking the block, the bullet is embedded in the block and the block and the bullet move together as one unit.
(a)
What are the magnitude (in m/s) and direction of the velocity of the block/bullet combination immediately after the impact?
magnitude
Incorrect: Your answer is incorrect.
m/s
direction
Correct: Your answer is correct.
(b)
What are the magnitude (in N · s) and direction of the impulse by the block on the bullet?
magnitude
Incorrect: Your answer is incorrect.
N · s
direction
Correct: Your answer is correct.
(c)
What are the magnitude (in N · s) and direction of the impulse from the bullet on the block?
magnitude N · s
direction
Correct: Your answer is correct.
(d)
If it took 3 ms for the bullet to change the speed from 405 m/s to the final speed after impact, what is the average force (in N) between the block and the bullet during this time? (Enter the magnitude.)
N
†