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2 years ago

14

A bird flies north 3 kilometers and then south 4 kilometers, what is the resultant displacement of the bird? Do not forget to in

clude the direction

1 answer:

Ber [7]2 years ago

8 0

Answer: let north be+ and south be-

therefore, -1 km is the resultant displacement of the bird

hope it helped u,

pls put thanks and pls mark as the brainliest

^_^

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A wave has a wavelength of 10mm and a frequency of 5 hz what is the speed?

geniusboy [140]

V=fλ
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3 years ago

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The change in momentum of an object is equal to the ____________ that acts on it.

meriva

Answer : The change in momentum of an object is equal to the impulse that acts on it.

Explanation :

Change in momentum : The change in momentum of an object is the product of the mass and the change in velocity of an object.

The formula of change in momentum is,

$\Delta p=m\times \Delta v$

Impulse : An impulse of an object is the product of the force applied on an object and the change in time. Impulse is also equivalent to the change in momentum of an object.

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Proof :

$J=F\times \Delta t\\\\J=(m\times a)\times \Delta t\\\\J=m\times (a\times \Delta t)\\\\J=m\times \Delta v=\Delta p$

Hence, the change in momentum of an object is equal to the impulse that acts on it.

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2 years ago

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KengaRu [80]

Answer:

The value of the correct angle of banking for the road is $\theta = 67.76$ °

Explanation:

Given data

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$v = \sqrt{r g \tan \theta}$

$v^{2} = r g \tan \theta$

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Put all the values in above formula we get

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$T'=3*2\pi \sqrt{\frac{L}{g}}$

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