<span>A car with a mass of 1500kg starts from rest and accelerates to a speed of 18m/s in 12s. Assume that the force of resistance remains contant at 400N during</span>
Answer:
3.5 m
Explanation:
The wording at the end is not very clear, but I am pretty sure that the question is asking for the total distance moved from the starting point. If this is the case, the answer is found by subtracting the two vectors from each other because they are in opposite directions. This gives you 3.5 m. If the question was asking for the actual total distance moved, you would just add them together and get 14.3 m, but I don't think that is what the question is asking for. Hope this helps! :)
Answer:
The velocity is 
Explanation:
From the question we are told that
The initial speed of the hot water is 
The pressure from the heater 
The height of the hot water before flowing is 
The height of bathtub above the heater is 
The pressure in the pipe is 
The density of water is 
Apply Bernoulli equation
Substituting values
=> ![v_2^2 = \frac{ (450 *10^{3}) + (1000 * 9.8 *0 ) + (0.5 * 1000 * 0.85^2) -[ (1000 * *9.8*3.70) ]}{0.5*1000}](https://tex.z-dn.net/?f=v_2%5E2%20%3D%20%20%5Cfrac%7B%20%28450%20%2A10%5E%7B3%7D%29%20%2B%20%281000%20%2A%209.8%20%2A0%20%29%20%2B%20%280.5%20%2A%201000%20%2A%200.85%5E2%29%20-%5B%20%281000%20%2A%20%2A9.8%2A3.70%29%20%5D%7D%7B0.5%2A1000%7D)
=> ![v_2= \sqrt{ \frac{ (450 *10^{3}) + (1000 * 9.8 * 0) + (0.5 * 1000 * 0.85^2) -[ (1000 * *9.8*3.70) ]}{0.5*1000}}](https://tex.z-dn.net/?f=v_2%3D%20%5Csqrt%7B%20%5Cfrac%7B%20%28450%20%2A10%5E%7B3%7D%29%20%2B%20%281000%20%2A%209.8%20%2A%200%29%20%2B%20%280.5%20%2A%201000%20%2A%200.85%5E2%29%20-%5B%20%281000%20%2A%20%2A9.8%2A3.70%29%20%5D%7D%7B0.5%2A1000%7D%7D)
=>
Answer:
W
Explanation:
its high in mass object and volume object
