Refer to the diagram below.
Ignoring air resistance, use gravitational acceleration g = 9.8 m/s².
The pole vaulter drops with an initial vertical speed u = 0.
At impact with the pad, velocity v satisfies:
v² = 2 × (9.8 m/s²) × (4.2 m) = 82.32 (m/s)²
v = 9.037 m/s
As the pad compresses by 0.5 m to bring the vaulter to rest,
let the average acceleration (deceleration) be a m/s². Then:
0 = (9.037 m/s)² + 2 × a × 0.5 m
Solving for a gives:
a = - 82.32 / (2 × 0.5) = -82 m/s²
Thus, the deceleration magnitude is 82 m/s².
Answer:
wow, still in Canada, by the way, my answer is ayy
History of the Philippines
The Philippines is a nation located in Southeast Asia near the Pacific Ocean. It comprises over 7,000 islands, serving as home to Filipinos. Here are several ways in which the strategic location of our country has contributed to shaping our history:
History of the PhilippinesThe Philippines is a nation located in Southeast Asia near the Pacific Ocean. It comprises over 7,000 islands, serving as home to Filipinos. Here are several ways in which the strategic location of our country has contributed to shaping our history:Being surrounded by bodies of water made fishing the primary livelihood of early Filipinos.
Over 7,000 islands, serving as home to Filipinos. Here are several ways in which the strategic location of our country has contributed to shaping our history:Being surrounded by bodies of water made fishing the primary livelihood of early Filipinos.When Ferdinand Magellan sailed, he landed on one of the islands in the Philippines. This marked the beginning of colonizationDue to the strategic location...
Answer:
1. The force applied by the shelf supporting the book.
Explanation:
The free body diagram for the book is represented as follows:
1 - The weight of the book acting downward
2 - The normal force exerted by the shelf upward on the book.
As the book remains stationary, these two forces balance each other, and in accordance with Newton's Third Law, the reactive force equivalent to gravity is opposite and equal to the weight of the book. This reaction force prevents the book from falling off the shelf.
Response:
D: The distance among the particles diminishes
Clarification:
Removing energy reduces the activity of molecules, similar to how one slows down in cold temperatures (I believe).
At time 
, the ball's horizontal and vertical velocities can be represented as
However, since the ball is thrown horizontally, we have 
. The horizontal and vertical positions at time are
The ball travels a distance of 22 m horizontally from the throw point, thus
With this, we determine that the time for the ball to reach the ground is
When it touches down, 
and
