Development begins the instant you are conceived. t or f

the first american roller coaster was the mauch chunk switchback railway, built in the mountains of pennsylvania in the mid-1800s. the track, originally built to send coal to a railway, was reconfigured as a "scenic tour."

i believe the answer would be:

d. violin, clarinet, french horn, and tuba

i think it's 35 meters

the maxium height is 34m/s