A 2 kg block is sliding on a level frictionless surface at a velocity of 2 m/s. It receives an impulse of 2 kg m/s in the same direction it is already moving. What is the velocity of the ball immediately after the impulse?

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."

the part of the wave he is travelling on is the crest