Question:
A particle which is experiencing a force, given by
\(\vec F=3\hat i-12\hat j\),
undergoes a displacement of
\(\vec d=4\vec i\)
particle had a kinetic energy of 3 J at the beginning of the displacement, what is its kinetic energy at the end of the displacement ?
A particle which is experiencing a force, given by
\(\vec F=3\hat i-12\hat j\),
undergoes a displacement of
\(\vec d=4\vec i\)
particle had a kinetic energy of 3 J at the beginning of the displacement, what is its kinetic energy at the end of the displacement ?
\(\vec F=3\hat i-12\hat j\),
undergoes a displacement of
\(\vec d=4\vec i\)
particle had a kinetic energy of 3 J at the beginning of the displacement, what is its kinetic energy at the end of the displacement ?
Show Hint
Work done = F dot d; then use the work-energy theorem.
Updated On: Nov 5, 2026
- 9 J
- 10 J
- 12 J
- 15 J
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Work done \(W=\vec F\cdot\vec d=(3\hat i-12\hat j)\cdot(4\hat i)=12\) J.
Work-energy theorem: \(K_f=K_i+W=3+12=15\) J.
Answer: (4) 15 J
Work-energy theorem: \(K_f=K_i+W=3+12=15\) J.
Answer: (4) 15 J
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