Jan and Len throw identical rocks off a tall building at the same time. Theground near the building is flat. Jan throws her rock straight downward.Len throws his rock downward and outward such that the angle betweenthe initial velocity of the rock and the horizon is 30°. Len throws the rockwith a speed twice that of Jan's rock. If air resistance is negligible, whichrock hits the ground first?O It is impossible to know from the informationO They hit at the same time.Jan's rock hits first.O Len's rock hits first. A book which has a velocity of 3.61 m/s in the horizontal direction slidesoff the edge of a table that is 1.73 m high. How far in meters from thetable does the book land?Express your answer rounded off to two decimal places. Do not includethe unit.

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Description: Jan and Len throw identical rocks off a tall building at the same time. Theground near the building is flat. Jan throws her rock straight downward.Len throws his rock downward and outward such that the angle betweenthe initial velocity of the rock a

Given : speed of Jan rocks = u m/s Speed of Len rocks = 2u m/s Angle Len throw rock = 30° Height of…

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Jan and Len throw identical rocks off a tall building at the same time. The ground near the building is flat. Jan throws her rock straight downward. Len throws his rock downward and outward such that the angle between the initial velocity of the rock and the horizon is 30°. Len throws the rock with a speed twice that of Jan's rock. If air resistance is negligible, which rock hits the ground first? It is impossible to know from the information given. - O They hit at the same time. O Jan's rock hits first. O Len's rock hits first.

Jan and Len throw identical rocks off a tall building at the same time. The ground near the building is flat. Jan throws her rock straight downward. Len throws his rock downward and outward such that the angle between the initial velocity of the rock and the horizon is 30°. Len throws the rock with a speed twice that of Jan's rock. If air resistance is negligible, which rock hits the ground first? It is impossible to know from the information given. - O They hit at the same time. O Jan's rock hits first. O Len's rock hits first.

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

Displacement, Velocity and Acceleration

In classical mechanics, kinematics deals with the motion of a particle. It deals only with the position, velocity, acceleration, and displacement of a particle. It has no concern about the source of motion.

Linear Displacement

The term "displacement" refers to when something shifts away from its original "location," and "linear" refers to a straight line. As a result, “Linear Displacement” can be described as the movement of an object in a straight line along a single axis, for example, from side to side or up and down. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Linear displacement is usually measured in millimeters or inches and may be positive or negative.

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Question

Jan and Len throw identical rocks off a tall building at the same time. The
ground near the building is flat. Jan throws her rock straight downward.
Len throws his rock downward and outward such that the angle between
the initial velocity of the rock and the horizon is 30°. Len throws the rock
with a speed twice that of Jan's rock. If air resistance is negligible, which
rock hits the ground first?
O It is impossible to know from the information
O They hit at the same time.
Jan's rock hits first.
O Len's rock hits first.

A book which has a velocity of 3.61 m/s in the horizontal direction slides
off the edge of a table that is 1.73 m high. How far in meters from the
table does the book land?
Express your answer rounded off to two decimal places. Do not include
the unit.

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