What is sound advice for people becoming better listeners?
2 answers:
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Answer:
Distance, d = 8 meters
Explanation:
Given that,
Initial velocity of the motorboat, u = 7 m/s (west)
Final velocity of the motorboat, v = 2.4 m/s (west)
Acceleration of the motorboat, (east)
We need to find the distance covered by it. It can be calculated as :
s = 8 meters
So, the distance covered by the motor boat is 8 meters. Hence, this is the required solution.
The power output of second motor is 9.8 10^3 W.
<u>Explanation:</u>
Power is defined as the rate of doing electric work. I short it can be viewed as
Power = work done / time
Work done is the product of mass, gravity, and height. (i.e. mgh)
Given that m = 1000 kg, h = 10 m, g = 9.8 m / s^2, t = 10 s
Power = work done / time
= (m g
h) / time
= (1000 9.8
10) / 10
power = 9800 W = 9.8 10^3 W.