Letupan 6.5 ms-1
250 ms
TAO
Sebutir peluru berjisim 10 g dilepaskan daripada selaras
senapang yang berjisim 1.5 kg. Halaju peluru dan senapang
adalah 250 m s' dan 6.5 ms! Hitungkan momentum
peluru dan senapang itu.
A bullet of mass 10 g fired from a riffle of mass 1.5 kg. The velocity
of the bullet and the riffle are 250 m s' and 6.5 m sl. Calculate
the momentum of the bullet and the riffle.
KBAT Menganalisis​

Alarge truck is moving 22.0 m/s. if it’s momentum is 125,000 kg • m/s, what is the trucks mass

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

There are two-speed cameras, one in an are where the speed limit is 30 km/h and another where the speed limit is 50 km/h. in which will there be a smaller time interval between the photographs? explain your answer.