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telo118 [61]
3 years ago
13

When a wave strikes a solid barrier it behaves like a basketball hitting a backboard this wave behavior years called?

Physics
1 answer:
Mama L [17]3 years ago
5 0
This behavior is called reflection.
Reflection is a change of in direction of the wave when it reaches another medium. Imagine a wave colliding with a glass in a tank of water.
During reflection, some of the initial energy of the wave is lost.
Waves always reflect with at same angle at which it approached the obstacle.
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348.34 m/s. When Superman reaches the train, his final velocity will be 348.34 m/s.

To solve this problem, we are going to use the kinematics equations for constant aceleration. The key for this problem are the equations d=v_{0} t+\frac{at^{2} }{2} and v_{f} =v_{0} +at where d is distance, v_{0} is the initial velocity, v_{f} is the final velocity, t is time, and a is aceleration.

Superman's initial velocity is v_{0}=54.5\frac{m}{s}, and he will have to cover a distance d = 850m in a time t = 4.22s. Since we know d, v_{0} and t, we have to find the aceleration a in order to find v_{f}.

From the equation d=v_{0} t+\frac{at^{2} }{2} we have to clear a, getting the equation as follows: a=\frac{2(d-v_{0}t) }{t^{2} }.

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a=\frac{2(850m-54.5\frac{m}{s}.4.22s) }{(4.22s)^{2}}=69.63\frac{m}{s^{2}}

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5 0
3 years ago
3m/s for 12 seconds how dar would he walk
Sunny_sXe [5.5K]
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atroni [7]

Answer:

\huge\boxed{\sf 1.6\ units = 14.4p}

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Since,

<h3><u>1 kWh = 1 unit</u></h3>

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If,

<h3>1 unit = 9p</h3>

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1.6 units = 14.4p

\rule[225]{225}{2}

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