A person carries a mass of 10 kg and walks along the +x-axis for a distance of 100m with a constant velocity of 2 m/s. What is t
2 answers:
Answer:
Work done, W = 0
Explanation:
It is given that,
Mass of the object, m = 10 kg
Distance covered by the person, d = 100 m
Speed of the person, v = 2 m/s
We need to find the work done by this person. We know that the product of force and distance is equal to the work done by the person. Mathematically,
Since, the acceleration is equal to the rate of change of velocity. Here, the person is moving the mass with a constant velocity. So, there is no change in velocity, a = 0
As a result, the work done by the person is 0 J. So, the correct option is (c). Hence, this is the required solution.
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Answer:
<h2>15m/s</h2>Explanation:
The equation for a traveling wave as expressed as y(x, t) = A cos(kx − t) where An is the amplitude f oscillation,
is the angular velocity and x is the horizontal displacement and y is the vertical displacement.
From the formula; where;
Before we can get the transverse speed, we need to get the frequency and the wavelength.
frequency = 1/period
Given period = 2/15 s
Frequency =
frequency = 1 * 15/2
frequency f = 15/2 Hertz
Given wavelength = 2m
Transverse speed
Hence, the transverse speed at that point is 15m/s