As part of a safety investigation, two 1400 kg cars traveling at 20 m/s are crashed into different barriers. find the average forces exerted on (a) the car that hits a line of water barrels and takes 1.5 s to stop, and (b) the car that hits a concrete barrier and takes 0.10 s to stop.

(a) 18667N

(b)280000N

Explanation:

The momentum of both car prior to collision:

M = mv = 1400*20 = 28000 kgm/s

After colliding, the average force exerting on either car to kill this momentum is

(a)

(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.

the ima (higher than 1m) will be greater than the ima with the height of 1m.