Aparticle's position is given by the formula r 2+3¢2 1.86t where zis in metres and tis in seconds and 0< t< 1se (a) what is the particle's velocity at t 1second? number m/s (b) what is the particle's maximum speed in this period?

massxgravity x heght=weightxheight= pe

4900=490xh

h=10

dec 23, 2016 - a load of bricks weighing 680 n a distance of 10 m across a parking lot. if if the worker pushes the cart with a constant force of 209 n, what work= force x distance = 220 n x 10 m = 2200 n.m = 2200 j i don't know where the person got it from, but the initial part, work= force x distance me.

the inner core.

good luck: )

klicker