Help me anybody please solve this

Physics

1 answer:

spin [16.1K]3 years ago

4 0

Answer:

quizlet would help trust it really doess!!

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Ludmilka [50]

I think it’s R=U/I = 120/5 = 24

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Answer:

Explanation:

Since both vectors are pointing on the same direction (Northeast), the sum of them will point in that same direction, and its magnitud will be the sum of the magnitudes of each vector (40m/s2+10m/s2). This problem is just a problem in one dimension. The sum of the vectors is then 50m/s2 Northeast.

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3 years ago

WILL MARK BRAINLIEST! The driver of a pickup truck going 120 km/h applies the brakes, giving the truck a uniform deceleration of

Rudik [331]

First put the speed in m/s. 120km/h = 33.33m/s. Now the position function is the integral of velocity, and velocity is in turn the integral of acceleration. The velocity is:
$v= \int\limits^{} _ {} {-5} \, dt =-5t+33$
Now we integrate this expression to get the position. The constant of integration will be the distance the truck travels.
$s= \int\limits^{} {-5t+33} \, dx =- \frac{5}{2}t^2+33.33t-35=0$
Here we set the distance, 35m as negative because I assumed the stopping point of the truck is the origin. Putting t=0 shows it starts at -35m.
Now solve the following equation for the time, t using the quadratic equation:
$s=- \frac{5}{2}t^2+33.33t-35=0$
and choose the value t=1.149s

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4 years ago