Two students, Anita Life and Dustin MyEye, are discussing the motion of the box. Dustin claims that the object is moving to the right at a constant velocity because the
forces are balanced and friction is to the left. Anita claims that the object is at rest
because the forces are balanced. She claims that friction is keeping the object from
moving. Analyze both of their claims. Make a Claim, support it with Evidence, and
explain your Reasoning.

Fft review: linspace, fs, fftshift, nfft 1. generate one second of a cosine of w,-10hz sampled at f, = 100hz and assign it to x. define a tt as your time axis 2. take 64 points fft. 3. as you remember, the dft (which the fft implements) computes n samples of s2t where k-0,1,2, n -1. plot the magnitude of this 64-points fft at range 0 to 63, what do you think of this graph? 4â·to get the x-axis into a hz-frequency form, plot this 64-points fft between-50 to 50 (the 100hz sampling rate) and have n-points between them. 5. according to your figure, what frequency is this cosine wave at? 6. remember that the fft is evaluating from 0 to 2ď€. we are used to viewing graphs from-ď€ to ď€. therefore, you need to shift your graph. 7. now according to your shifted graph. what frequency is this at? 8. note that the spikes have long drop-offs? try a 1024-point dft. note that the peak is closer to 10 and the drop-off is quicker. although, now sidelobes are an issue

Transfer chemicals from one location to another to weather objects. a-water b-physical weathering c-chemical weathering

What is the measure of a change in an objects velocity?