Newton's Laws: Force, Time, Acceleration, & Distance

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SUMMARY

The discussion centers on applying Newton's Laws of Motion to a scenario involving a 4kg block subjected to a 5N force, resulting in an acceleration of 1 m/s². After 5 seconds of force application, the block's speed reaches 5 m/s. Once the force is removed, the block experiences no further acceleration, maintaining its speed until friction or other forces act upon it. The total distance traveled during the motion is calculated using the formula for distance under constant acceleration.

PREREQUISITES
  • Understanding of Newton's Second Law of Motion
  • Familiarity with basic kinematic equations
  • Knowledge of force, mass, and acceleration relationships
  • Ability to perform calculations involving time, speed, and distance
NEXT STEPS
  • Study the kinematic equations for uniformly accelerated motion
  • Learn about the implications of friction on motion
  • Explore real-world applications of Newton's Laws in engineering
  • Investigate the effects of varying forces on acceleration
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Students studying physics, educators teaching mechanics, and anyone interested in understanding the practical applications of Newton's Laws of Motion.

Xintong
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A 4kg block rests on a table. 5N is applied to it, pulling it the right, giving it an acceleration of 1ms^-2.
( a)If the applied force acts on the block for 5s, what will be the speed of the block at the end of this 5s be?
(b)After 5s, the applied force is removed. What will be the new acceleration of the block?
(c)How far has the block moved for the whole motion?
 
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Hi Xintong, welcome to PF. Please observe the rules of this forum and use the homework template for posting questions. List the relevant equations and tell us what you think about the problem.
 

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