Determine the value of impulse from this graph of momentum vs. time.

a.
9 newton seconds
b.
12 newton seconds
c.
18 newton seconds
d.
20 newton seconds

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

How do you tell if someone actually cares about you? and just say they do?

Identify the theory that can be used to explain each phenomenon. answers diffraction: wave theory interference: wave theory reflection: both particle and wave theories refraction: both particle and wave theories