Which one of the following is NOT acceleration A.
a change in mass
B.
a change in direction
C.
an increase in velocity
D.
a decrease in velocity

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?