Answer:
The man's velocity relative to the moving walkway is, v₂₃ = 0.2 m/s
Explanation:
Given data,
The speed of the moving walkway, v₁₂ = 0.9 m/s
The speed of the man walking on a walkway to the stationary observer, v₁₃ = 1.1 m/s
The speed of the man walking on a walkway to the walkway, v₂₃ = ?
The formula for relative velocity is,
<em> v₁₃ = v₁₂ + v₂₃</em>
∴ v₂₃ = v₁₃ - v₁₂
Substituting the values,
v₂₃ = 1.1 - 0.9
= 0.2 m/s
Hence, the man's velocity relative to the moving walkway is, v₂₃ = 0.2 m/s
Weight= Mass x Gravity. Gravity on Earth is 9.81. Therefore if you multiply 42 by 9.8, you will get 411.6 which is her weight on Earth.
Answer:
Astronomical Unit (AU). The definition of AU is the distance between the sun and the earth. Hopes this helps!
Explanation:
Shooking the rope up and down 5 times per seconds means that there are 5 cycles of the wave (or 5 crests) in one second, and so its frequency is
.
The period T is the reciprocal of the wave's frequency, therefore it is