Give two examples (other than those discussed in the text) of interactions that may be detected by observing: (a) Change in velocity (b) Change in temperature (c) Change in shape (d) Change in...

Give two examples (other than those discussed in the text) of interactions that may be detected by observing:

(a) Change in velocity

(b) Change in temperature

(c) Change in shape

(d) Change in identity

(e) Lack of change when change is expected