10. Discrimination refers to behaviors that a allow us to tell one ethnic group from another.
b occur when members of a racial group threaten an individual's security.
c prevent individuals from doing things they should be able to do.
d are directed toward a particular group.

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s

Ais a machine that makes work easier when a single force is applied. a simple machine b compound machine c endangered machine d complex machine

2) why do satelites not fall while revolving around the earth?