A 2.0 kg object has a velocity of 4.0f m/s at t = 0. A constant resultant force of (2.0î + 4.0f ) N then acts on the object for 3.0 s. What is the magnitude of object's velocity at the end of the 3.0-s interval?

A 2.0 kg object has a velocity of 4.0f m/s at t = 0. A constant resultant force of (2.0î + 4.0f ) N then acts on the object for 3.0 s. What is the magnitude of object's velocity at the end of the 3.0-s interval?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter6: Momentum, Impulse, And Collisions

Section: Chapter Questions

Problem 28P: Two objects of masses m1 = 0.56 kg m2 = 0.88 kg are placed on a horizontal frictionless surface and...

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Concept explainers

Proper Length

The theory of special relativity explains the connection between space and time to objects that move in a straight line at a constant speed. The objects move at the speed of light. When an object approaches light speed, its mass is endless and cannot move faster than light. The most crucial postulate of Einstein's special relativity is that the laws of nature do not change in each frame of reference.

Question

A 2.0 kg object has a velocity of 4.0f m/s at t= 0. A constant resultant force of (2.0î + 4.0j ) N then acts
on the object for 3.0 s. What is the magnitude of object's velocity at the end of the 3.0-s interval?
Option 1
Option 2
Option 3
Option 4
Option 5
9.2 m/s
6.3 m/s
8.2 m/s
7.2 m/s
7.7 m/s

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