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Wewaii [24]
3 years ago
10

A bird flew 16 km west in 5 hours , then flew 20 km east in 6 hours . What was the birds velocity?

Physics
1 answer:
LenaWriter [7]3 years ago
5 0
During that period of time, the bird's displacement was 4 km east. So its velocity was (4km east)/(11hrs). That's 0.36 km/hour east. (rounded)
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Given that force is applied at an angle of 30 degree below the horizontal

So let say force applied if F

now its two components are given as

F_x = Fcos30


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Now the normal force on the block is given as

N = Fsin30 + mg

N = 0.5F + (18\times 9.8)

N = 0.5F + 176.4

now the friction force on the cart is given as

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F_f = 0.625(0.5F + 176.4)

F_f = 110.25 + 0.3125F

now if cart moves with constant speed then net force on cart must be zero

so now we have

F_f + F_x = 0

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Misha Larkins [42]

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<h3>What is an atom?</h3>

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Learn more about an atom here: brainly.com/question/11467887

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