Overview
Please answers all the 5 questions with the steps please.Please write your name and date of the submission.
- During a one-hour boat trip, a group of visitors traveled 50.0 km north and then traveled 70.0 km east.
What is their displacement for the one-hour trip?
What is their average speed during the one-hour trip?
What is the direction of the boat's average velocity for the one-hour trip?
2. An object is traveling East through the earth’s atmosphere at 20.0 km/s while at the same time falling down under the influence of earth’s gravity at a rate of 15 km/s.
At this moment, what is its net speed, in km/s?
What is its acceleration in the vertical direction (both magnitude and direction)?
3.In the above problem, it took 10 seconds for the object to fall on the ground from the initial location where it was traveling East through the earth’s atmosphere at 20.0 km/s while at the same time falling down under the influence of earth’s gravity at a rate of 15 km/s.
What is the velocity in the vertical and horizontal directions just before it hits the ground, assuming the acceleration in the horizontal was zero?
How high was the object from the ground at the initial location?
4.As a tennis ball is struck, it departs from the racket horizontally with a speed of 30.0 m/s. The ball hits the court at a horizontal distance of 20.0 m from the racket.
How far above the court is the tennis ball when it leaves the racket?
How long did it take for the ball to hit the ground?
5.A criminal is escaping across a rooftop and runs off the roof horizontally at a speed of 5 m/s, hoping to land on the roof of an adjacent building. Air resistance is negligible. The horizontal distance between the two buildings is D, and the roof of the adjacent building is 3.0 m below the jumping-off point. Find the maximum value for D