A car of mass 1200 kg is traveling at 2 m/s. Then it collides with a heavy boulder in the road. During the collision, the car moves forward only 15 cm before stopping. What is the average force exerted by the boulder on the car? PLEASE HELP on the answer choices its to the power of 4 and not 104.

Question

anonymous · Answer

.5 × 105 N
	3.2 × 104 N
	5.4 × 104 N
	1.6 × 104 N
	1.8 × 104 N    I got D but not sure if its right

baru · Answer

i'm getting 1.6

baru · Answer

how did u do it?
v^2 - u^2 = 2as ?

anonymous · Answer

yeah, so pretty much its gonna be 1.6 im guessing

baru · Answer

yep..go with D.  :)

anonymous · Answer

thanks :)