2. three super strong teenagers pull a heavy crate across the floor. dion pulls with a force of 18.5 n towards 0°. shirley pulls with a force of 16.5 n towards 30°, while joan pulls with a force of 19.5 n towards 300°
a. what is the resultant force of the heavy crate?
b. what direction (bearing) is the crate moving?

show work
will mark !

A) The resultant force is 43.4 [N]

B) The movement of the heavy crate is going to the right and in the negative direction on the y-axis

Explanation:

We need to make a sketch of the different forces acting on the heavy crate.

In the attached image we can see the forces and the sum of the vector with their respective angles.

Forces in the X-axis

Forces in the y-axis

Using the Pythagorean theorem

The movement of the heavy crate is going to the right and in the negative direction on the y-axis, this can be easily seen in the graphical sum of vectors.

graphing motion: mastery test

209be

what is the instantaneous acceleration of

the particle at point b?

0 meters/second?

10 meters/second?

12 meters/second?

velocity imetersisecond

15 meters/second?

20

time (seconds)

answer: 0 meters/second^2