If the force Fi remains constant while it is applied for a time T, the final speed of the object is v1. What is the final speed v2 (in terms of vi) if the applied force is F2 = 2F¡ and is constant while it is applied for the same time T? (In a later chapter well call force times distance work and force times time impulse and associate work and impulse with the change in speed.) Express your answer in terms of v1.
If the force Fi remains constant while it is applied for a time T, the final speed of the object is v1. What is the final speed v2 (in terms of vi) if the applied force is F2 = 2F¡ and is constant while it is applied for the same time T? (In a later chapter well call force times distance work and force times time impulse and associate work and impulse with the change in speed.) Express your answer in terms of v1.
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I need help on part b
Transcribed Image Text:I Review I Constants
Starting at timet = 0, net force F is applied to an
object that is initially at rest.
Part A
If the force remains constant with magnitude F while the object moves a distance d, the final speed of the object is v1. What is the final
speed v2 (in terms of v1) if the net force is F, = 2F and the object moves the same distance d while the force is being applied?
Express your answer in terms of v1.
v2 = V2v1
Submit
Previous Answers
v Correct
Part B
If the force F remains constant while it is applied for a time T, the final speed of the object is v1. What is the final speed v2 (in terms of
v1) if the applied force is F2 = 2F and is constant while it is applied for the same time T? (In a later chapter we'll call force times distance
work and force times time impulse and associate work and impulse with the change in speed.)
Express your answer in terms of v1.
?
v2 =
Expert Solution
Step 1
Introduction:
When a large amount of force acts on a body for a very small interval of time, it is called impulse. This impulse changes the momentum of the object so, the impulse is written as,
Applying this formula, section b of the given problem can be easily solved considering the time given is very small.
Another idea to solve this problem is to apply the equation of motion.
Acceleration is a change in momentum per unit time and this can be applied in Newton's second law.
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