3 years ago

A+b(2d*5d)+7654321-2234567

1 answer:

6 0

A+b(2d*5d)+7654321−2234567
=a+10bd^2+5419754=(10bd^2)+(a)+5419754=10bd^2+a+5419754

Answer:=10bd^2+a+5419754

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CaHeK987 [17]

Answer:

don't know what class are you you are using which mobile or laptop

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Artyom0805 [142]

To calculate the initial velocity of the bike, we use the following equation

$d=\frac{1}{2} (u+v)t$ .

$u=\frac{2d}{t} -v$

Here, u is initial velocity, v is final velocity, t is the time and d is the distance covered by bike.

Given, $u =7.8 m/s$ , $d= 19 m$ and $t=4.2 s$ .

Substituting these values in above equation, we get

$u = \frac{2 \times 19}{4.2 \ s} -7.8 m/s = 9.05 \ m/s - 7.8 \ m/s \\\\ u= 1.2 m/s$ .

Thus, the initial velocity of the bike is 1.2 m/s.

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Troyanec [42]

Since it was stated that it must move at constant velocity, so the only force it must overpower is the frictional force.

So the equation is:

F cos θ = Ff

F cos 36 = 65 N

F = 80.34 N

So the nurse must exert 80.34 N of force

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3 years ago

zysi [14]

D is the correct answer

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My name is Ann [436]

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3 years ago