Question

You are to make four straight-line moves over a flat desert
floor, starting at the origin of an *xy* coordinate system
and ending at the *xy* coordinates (-127 m, 62 m). The
*x* component and *y* component of your moves are the
following, respectively, in meters: (20 and 60), then
(*b _{x}* and -70), then (-20 and

Answer #1

A particle moves in the xy plane, starting from the origin at
t=0 with an initial velocity having an x-component of 6 m/s and y
component of 5 m/s. The particle experiences an acceleration in the
x-direction, given by ax=4t m/s2. Determine the acceleration vector
at any later time. Determine the total velocity vector at any later
time Calculate the velocity and speed of the particle at t=5.0 s,
and the angle the velocity vector makes with the x-axis. Determine...

21) A person carries a 25.0-N rock through the path shown in the
figure, starting at point A and ending at point B. The total time
from A to B is 1.50 min. How much work did gravity do on the rock
between A and B?
A) 625 J
B) 20.0 J
C) 275 J
D) 75 J
E) 0 J
22) A person carries a 2.00-N pebble through the path shown in
the figure, starting at point A and...

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