A 5.77-kg object passes through the origin at time t = 0 such that its x component of velocity is 5.45 m/s and its y component of velocity is -2.94 m/s. (a) What is the kinetic energy of the object at this time? (b) At a later time t = 2.00 s, the particle is located at x = 8.50 m and y = 5.00 m. What constant force acted on the object during this time interval? magnitude N direction • measured from the +x axis (c) What is the speed of the particle at t = 2.00 s? m/s

Glencoe Physics: Principles and Problems, Student Edition
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Chapter11: Energy And Its Conservation
Section: Chapter Questions
Problem 44A
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A 5.77-kg object passes through the origin at time \( t = 0 \) such that its \( x \) component of velocity is 5.45 m/s and its \( y \) component of velocity is \(-2.94\) m/s.

(a) What is the kinetic energy of the object at this time?
\[
\boxed{\phantom{00}} \text{J}
\]

(b) At a later time \( t = 2.00 \) s, the particle is located at \( x = 8.50 \) m and \( y = 5.00 \) m. What constant force acted on the object during this time interval?
   - magnitude: \(\boxed{\phantom{00}}\) N
   - direction: \(\boxed{\phantom{00}}\)° measured from the \( +x \) axis

(c) What is the speed of the particle at \( t = 2.00 \) s?
\[
\boxed{\phantom{00}} \text{m/s}
\]
Transcribed Image Text:A 5.77-kg object passes through the origin at time \( t = 0 \) such that its \( x \) component of velocity is 5.45 m/s and its \( y \) component of velocity is \(-2.94\) m/s. (a) What is the kinetic energy of the object at this time? \[ \boxed{\phantom{00}} \text{J} \] (b) At a later time \( t = 2.00 \) s, the particle is located at \( x = 8.50 \) m and \( y = 5.00 \) m. What constant force acted on the object during this time interval? - magnitude: \(\boxed{\phantom{00}}\) N - direction: \(\boxed{\phantom{00}}\)° measured from the \( +x \) axis (c) What is the speed of the particle at \( t = 2.00 \) s? \[ \boxed{\phantom{00}} \text{m/s} \]
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