part one:
a force f~ = fx ˆı + fy ˆ acts on a particle that

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

where fx = 1 n, fy = −4 n, sx = 1 m, and

sy = 2 m.

find the work done by the force on the

particle.

answer in units of j.

part two:
find the angle between f~ and ~s.
answer in units of ◦

Jasmine is diving off a 3-meter springboard. her height in meters above the water when she is x meters horizontally from the end of the board is approximated by the equation h=-x^2+3x+3. what is the maximum height jasmine will reach on her dive?

Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island