2 years ago

A bird flies at 13 m/s. The wind speed is 5 m/s. What is the speed of the bird when it flies with the wind?

Physics

1 answer:

Ksju [112]2 years ago

4 0

Answer:

im pretty sure its 18m/s

Explanation:

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3 years ago

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12. A measuring cylinder has 150ml. of water in it. When a stone is immersed into the measuring cylinder, the water level raised

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Answer:

60ml

Explanation:

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2 years ago

A 250 kg flatcar 25 m long is moving with a speed of 3.0 m/s along horizontal frictionless rails. A 61 kg worker starts walking

Anna11 [10]

Answer:

x=31.09m

Explanation:

p1=p2

The momentum of flatcar and the momentum of the worker so

The velocity of the worker is:

$m_{f}*v_{f}=m_{w}*v_{w}\\\\v_{f}=\frac{m_{f}*v_{f}}{m_{w}}\\v_{f}=\frac{61kg*3.0\frac{m}{s}}{250kg}\\v_{f}=0.732\frac{m}{s}$

The total motion has a total velocity and is

$Vt=v_{w}+v_{f}\\Vt=0.732\frac{m}{s}+3.0\frac{m}{s}\\Vt=3.732\frac{m}{s}$

The time the worker take walking is

$t=\frac{x}{v_{w}}\\t=\frac{25m}{3\frac{m}{s}}=8.33s$

Now the total time and the total velocity determinate the motion of tha flatcar how far has moved

$x=t*Vt\\x=8.33s*3.732\frac{m}{s} \\x=31.09m$

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3 years ago

What determines whether an object will scatter light or reflect light?

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Scatter light doesn't reflect, reflect light goes off a mirror.

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