Homework Statement
Moving at a constant speed, an elevator lifts a 1200N package 10m in 3 sec. During this time, the impulse delivered to the package by the elevator floor is
a) zero
b) 12000 Nm up
c) 3600 Ns up
d) 12000 Ns up
Homework Equations
change in momentum = net Force*time...
Homework Statement
A 2kg block, initially moving due east at 6m/s, is acted upon by an impulse having magnitude 4Ns and direction due west. What is the final velocity of the block?
a) 8m/s west
b) 4m/s west
c) 4m/s east
d) 8m/s east
Homework Equations
change in momentum = F*(time...