Strider

Much appreciated! 

thanks! whats the formula for deceleration? i have driving at 25mi/hr slam on breaks, and in 3 seconds speed decreases to 8mi/hr.

thanks! i figured it out! 

find the cross product of vectors p= -2i -3j and q= 4i +7j

yea, they aren't given. so does that mean i only do the one that applies? a1b2 - a2b1?

Edit*** so it would be?
 a x b= -2 instead of a x b = 0, 0, -2?

so the formula would be 

(-3)(0) - (0)(7)