If an object is accelerating at 4 m/s^2 and has a mass of 8 kg, what is the net force (in newtons, N) on the object?

Heena wants to measure the volume of a ball that is 24 cm across. how should she set up her equation?

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

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.