2 years ago

24 POINTS

Physics

2 answers:

ahrayia [7]2 years ago

7 0

It is traveling at 100 m per second

mojhsa [17]2 years ago

6 0

Wave Speed = Wavelength * Frequency

s = 50 * 2

s = 100 m/s

In short, Your Answer would be: 100 m/s

Hope this helps!

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You serve a volley ball with a mass of 2.1 kg. The ball leaves your hand with a speed of 30 m/s. The ball has_______ energy. Can

Greeley [361]

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Anyways, I hope I have been helpful to you.

5 0

2 years ago

A shell is fired at an angle of 35° above the horizontal at a velocity of 40 m/s. (a) What is it's speed at the highest point of

Fudgin [204]

Answer:

Part a)

$v_f = v_x = 32.77 m/s$

Part b)

T = 4.68 s

Explanation:

Part a)

Shell is fired at speed of 40 m/s at angle of 35 degree

so here we have

$v_x = 40 cos35 = 32.77 m/s$

$v_y = 40 sin35 = 22.94 m/s$

since gravity act opposite to vertical speed of the shell so at the highest point of its trajectory the vertical component of the speed will become zero

so at the highest point the speed is given

$v_f = 32.77 m/s$