(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

PART A: A force ~F = Fx ˆı+Fy ˆ acts on a particle that

undergoes a displacement of ~s = sx ˆı + sy ˆ

where Fx = 6 N, Fy = −3 N, sx = 5 m, and

sy = 1 m.

Find the work done by the force on the

particle.

Answer in units of J.

PART B: Find the angle between ~F and ~s.

Answer in units of ◦.

PART C: An easy question but still need help:

Which of the following does not involve work?

1. A golf ball is struck.

2. A weight lifter does military presses (lift-

ing weights over his head.)

3. A professor picks up a piece of chalk from

the floor.

4. A runner stretches by pushing against a

wall.

5. A child is pushed on a swing.

2. Relevant equations

a^2+b^2=c^2

F=ma

W=fcosthetad

3. The attempt at a solution

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# Homework Help: Work problem with vector notation! Help please

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