A 2.0 kg projectile with initial velocity v→ = 6.5i m/s experiences the variable force F→ = -2.0ti +4.0t2j N, where t is in s. What is the projectile's speed at t = 2.0 s? Also, at what instant of time is the projectile moving parallel to the y-axis?

A 2.0 kg projectile with initial velocity v→ = 6.5i m/s experiences the variable force F→ = -2.0ti +4.0t2j N, where t is in s. What is the projectile's speed at t = 2.0 s? Also, at what instant of time is the projectile moving parallel to the y-axis?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter4: The Laws Of Motion

Section: Chapter Questions

Problem 4P: Two forces, F1=(6i4j)N and F2=(3i+7j)N, act on a particle of mass 2.00 kg that is initially at rest...

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Question

A 2.0 kg projectile with initial velocity v→ = 6.5i m/s experiences the variable force F→ = -2.0ti +4.0t²j N, where t is in s. What is the projectile's speed at t = 2.0 s? Also, at what instant of time is the projectile moving parallel to the y-axis?

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