A 15 N force directed to the west acts on an object for 3.0 seconds. What is the change in momentum of the object?
0.20 Ns, west
5.0 Ns, west
12 Ns, west
45 Ns, west

Question

A 15 N force directed to the west acts on an object for 3.0 seconds. What is the change in momentum of the object?
 0.20 Ns, west
 5.0 Ns, west
 12 Ns, west
 45 Ns, west

yadu123 · Answer

i think its 5.0 ns west

yadu123 · Answer

thx

perl · Answer

Force = change in momentum / change in time. 

force * time = change in momentum

perl · Answer

If you have taken calculus, we can write it as
F = dp/dt
delta t * F = dp

yadu123 · Answer

ok

perl · Answer

in physics p stands for momentum. and dp/dt is the rate of momentum with respect to time. 
or the change of momentum with respect to time