How should light gates be set up to measure speed + what are some of their advantages + disadvantages?

mistakes are ok

correct it is c.) b b

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.

i believe the answer is a hope it and is correct