1, 2, 3 Show STEP BY STEP solution and box your final answer. Non-compliance with the direction will result to a wrong answer.1. The observation deck of tall skyscraper is 500 ft above the street. Determine thetime required for a penny to free fall from the deck to the street below.An object is launched at a velocity of 15 m/s in a direction making an angle of 30° upwardwith the horizontal.2. What is the maximum height reached by the object?3. What is the total flight time (between launch and touching the ground) of theobject?4. What is the horizontal range (maximum x above ground) of the object?5. What is the magnitude of the velocity of the object just before it hits the ground?6. The position of an electron is given byr 5ti-4tj +3k (where t is inseconds and the coefficients have the proper units for r to be in meters). (a)What is v(t) for the electron? (b) In unit-vector notation, what is v at t = 2.0 s?(c) What are the magnitude and direction of v just then?7. A particle moves so that its position as a function of time in Sl units isr = 4ti + tj + 2k. Write expressions for (a) its velocity and (b) its accelerationas functions of time.8. You throw a ball with a speed of 25.0 m/s at an angle of 40° above the horizontaldirectly toward a wall. The wall is 22.0m from the release point of the ball.(a) How long does the ball take to reach the wall?(b) How far above the release point does the ball hit the wall?(c) What are the horizontal and vertical components of its velocity as it hits thewall?

Given: Height (above the ground), h = 500 ft launch velocity, v = 15 m/s Launch angle ( with the…

Answered: y of 15 m/s in a direction making an…

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y of 15 m/s in a direction making an angle of 30

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Relative Velocity

It is a measurement of an object with regards to the other object which is moving or stable or stationary. For example, if we are traveling in a bus and the bus is moving at speed of 50km/hr, then our speed is according to the nearby passenger on the bus is zero. According to them, we are not moving. But if one person standing on the ground or road observes us from outside of the bus, according to him we are moving at a speed of 50km/hr and the bus is also moving at a speed of 50km/hr. Now, the motion is recognized by the observer, it depends on a frame of reference or observer. This is motion called relative motion.

Question

1, 2, 3

Show STEP BY STEP solution and box your final answer. Non-
compliance with the direction will result to a wrong answer.
1. The observation deck of tall skyscraper is 500 ft above the street. Determine the
time required for a penny to free fall from the deck to the street below.
An object is launched at a velocity of 15 m/s in a direction making an angle of 30° upward
with the horizontal.
2. What is the maximum height reached by the object?
3. What is the total flight time (between launch and touching the ground) of the
object?
4. What is the horizontal range (maximum x above ground) of the object?
5. What is the magnitude of the velocity of the object just before it hits the ground?
6. The position of an electron is given byr 5ti-4tj +3k (where t is in
seconds and the coefficients have the proper units for r to be in meters). (a)
What is v(t) for the electron? (b) In unit-vector notation, what is v at t = 2.0 s?
(c) What are the magnitude and direction of v just then?
7. A particle moves so that its position as a function of time in Sl units is
r = 4ti + tj + 2k. Write expressions for (a) its velocity and (b) its acceleration
as functions of time.
8. You throw a ball with a speed of 25.0 m/s at an angle of 40° above the horizontal
directly toward a wall. The wall is 22.0m from the release point of the ball.
(a) How long does the ball take to reach the wall?
(b) How far above the release point does the ball hit the wall?
(c) What are the horizontal and vertical components of its velocity as it hits the
wall?

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