A toy rocket is launched straight up into the air as the rocket rises what happens to the velocity

an obstruction

explanation:

newton's third law, for every action there is an equal and opposite reaction.

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 is a hope it and is correct