What trend does the reactivity of nonmetals show in a periodic table? 1. the reactivity changes are random with no real trends 2. reactivity increases from left to right across the periodic table ** 3. reactivity decreases from left to right across the periodic table 4. reactivity increases from right to left across a periodic table

Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 2 s. what is your acceleration?

Often called simply "velocity," this is the velocity of an object at a particular moment in time.

Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to: