9. If you drop a 4.3 kg rock off the top of a building that is 187 m high, how long will it take to reach the ground? 10. What will be the velocity of the rock from problem 9 when it reaches the ground? 11. If the rock from problem 9 was tossed straight up over the edge of the cliff with a velocity of 6.7 m/s then how long will it take the rock to reach the ground?

9. If you drop a 4.3 kg rock off the top of a building that is 187 m high, how long will it take to reach the ground? 10. What will be the velocity of the rock from problem 9 when it reaches the ground? 11. If the rock from problem 9 was tossed straight up over the edge of the cliff with a velocity of 6.7 m/s then how long will it take the rock to reach the ground?

Name: #9 to #11 are together 9. If you drop a 4.3 kg rock off the top of a b
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Description: #9 to #11 are together 9. If you drop a 4.3 kg rock off the top of a building that is 187 m high, how long will it take toreach the ground?10. What will be the velocity of the rock from problem 9 when it reaches the ground?11. If the rock from proble

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter2: Motion In One Dimension

Section: Chapter Questions

Problem 71AP: An ice sled powered by a rocket engine sum from rest on a large frozen lake and accelerates at + 40...

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An ice sled powered by a rocket engine sum from rest on a large frozen lake and accelerates at + 40 ft/s2. After some time t1, the rocket engine is shut down and the sled moves with constant velocity v for a time t2. If the total distance traveled by the sled is 17 500 ft and the total time is 90 s. find (a) the times t1 and t2 and (b) the velocity v. At the 17 500-ft mark, the sled begins to accelerate at 20 ft/s2. (c) What is the final position of the sled when it comes to rest? (d) How long does it take to come to rest?
A hare and a tortoise compete in a race over a straight course 1.00 km long. The tortoise crawls at a speed of 0.200 m/s toward the finish line. The hare runs at a speed of 8.00 m/s toward the finish line for 0.800 km and then stops to tease the slow-moving tortoise as the tortoise eventually passes by. The hare waits for a while after the tortoise passes and then runs toward the finish line again at 8.00 m/s. Both the hare and the tortoise cross the finish line at the exact same instant. Assume both animals, when moving, move steadily at their respective speeds. (a) How far is the tortoise from the finish line when the hare resumes the race? (b) For how long in time was the hare stationary?
1. A rock is thrown downward from a height of 288 feet with a velocity of 112 feet per second. a. How long will it take for the rock to reach the ground? b. What is the velocity of the rock when it hits the ground?
3. A jet plane has a takeoff speed of Vtakeoff = 60 m/s and can move along the runway at an average acceleration of 2.0 m/s?. The runway is 1.5 km. a. Write out the 3 Kinetic equations. b. Write out the values of initial position, initial velocity, and acceleration. c. How many seconds will it take for the plane to reach takeoff speed? d. How far will the plane have to travel to get to takeoff speed? e. will the plane be able to get to 69 m/s before it gets to the end of the runway?
3. A jet plane has a takeoff speed of Vtakeoff = 60 m/s and can move along the runway at an average acceleration of 2.0 m/s2. The runway is 1.5 km. a. Write out the 3 Kinetic equations. b. Write out the values of initial position, initial velocity, and acceleration. C. How many seconds will it take for the plane to reach takeoff speed? d. How far will the plane have to travel to get to takeoff speed? e. will the plane be able to get to 60 m/s before it gets to the end of the runway?
A physics student took a 4 hours car trip to visit a friend. In the first hour, he traveled 100 km at constant speed. In the two hours, he stopped after his car developed some trouble. In the last hour, he traveled 90 km.What was his average speed during a. first hour b. the last two hours c. the entire trip?
3. A boulder rolls over a 50m high cliff. How fast was the boulder moving if it was found 180 m on the ground? At what time did the boulder hit the ground? At what velocity was it approaching the ground?
Full formula Correct Correct Correct values answer, metric units inserted into rounded to the formula two decimal from the places word problem
If an object is dropped from a 196-foot-high building, its position (in feet above the ground) is given by s(t)= - 16t² + 196, where t is the time in seconds since it was dropped. a. What is its velocity 1 second after being dropped? b. When will it hit the ground? c. What is its velocity upon impact?
5. With what speed must an object be thrown to reach a height of 91.5 m ? Assume negligibl (small) air resistance. 6. A construction worker accidentally drops a brick from a high scaffold. a. What is the velocity of the brick after 7.0 s? b. How far does the brick fall during this time?
1. A stone is thrown downward from a tower with an initial velocity of 3 m/s. The height of tower is 50 meters above the ground.What would be its velocity be when it hits the ground?
1. A car starts from rest and attains a speed of 50 m/s in 15 seconds. a. How far has the car travelled in 15 seconds? b. What is the speed of car if it travels 567 meters?