1) What is the forward velocity of a 250 lb stone projectile that leaves a medieval catapult 55 degrees from the ground at 50 m/s? 2) A river flows due east at 1

Physics May 19, 2021

1) What is the forward velocity of a 250 lb stone projectile that leaves a medieval catapult 55 degrees from the ground at 50 m/s?

2) A river flows due east at 1.20 m/s. A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 10.0 m/s due north relative to the water.
(a) What is the velocity of the boat relative to shore?
1 m/s
2° (north of east)
(b) If the river is 400 m wide, how far downstream has the boat moved by the time it reaches the north shore?
3 m

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