Answer to Question #142313 in Mechanics | Relativity for Mikkos Joshua Garcia

Question

Topic: Uniformly Accelerated Horizontal Motion Problem and Free Fall Problem

1. John is driving his sports car down a four-lane highway at 40m/s. He overtakes be a slow-moving dump truck. If he can accelerate at 5m/s/s, how long will it take for him to reach the speed of 60 m/s?

2. John hopes to finish a 10,000 m run less than 30 min. After 27.0 min, there are still 1,100 m to go. How many seconds must he consume at an acceleration of 0.20 m/s/s in order to achieve the desired time?

3. A construction worker accidentally drops a brick from a high scaffold. What is the brick's velocity after 4.0 s?

4. A stone is thrown vertically upward with a speed of 12.0 m/s from the edge of a cliff 75.0 m high:

a. At what time will it reach the bottom of the cliff?

b. What is its speed just before hitting?

c. What total distance did it travel?

I need an brief illustration about those problemю

Answer 1

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