Calculate how fast the 3kg cart is traveling at the bottom of the 12m tall hill.

d is the answer i came up with

i believe it is b. what was the cause of the big bang

hope this !

f=ma newton's second law 7x8=56n

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19