Answer:
Explanation:
We shall apply law of conservation of momentum .
M and m be mass of man and boat . V and v be velocity of man and boat .
MV = mv
75 V = 30 v
2 .0 m/s is relative velocity of man wrt boat .
Given v + V = 2
V = 2 - v
75 ( 2 - v ) = 30 v
150 - 75 v = 30 v
150 = 105 v
v = 1.43 m /s
False,it could be false information like Wikipedia
Answer:
Explanation:
18 km/hr(1000 m/km) / (3600 s/hr) = 5 m/s
36 km/hr = 10 m/s
v² = u² + 2as
a = (v² - u²)/2s
a = (10² - 5²)/2(1000) = 0.0375 m/s²
v² = 10² + 2(0.0375)(1000)
v² = 175
v = 13.22875... ≈ 13 m/s ≈ 48 km/hr
v = u + at
t = (v - u) / a
t = (10 - 5)/0.0375 = 133.333... 133 s
t = (13.22875 - 10) / 0.0375 = 86.1 s
Answer: The complexity of filter is the order of the filter. Greater the order of the filter, more efficient the filter is. Roll of value of one filter is 20dB/dec. So the roll-off value of 8th order filter is 160dB/dec. 8th order filter is more efficient than the second order low-pass filter.
