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madreJ [45]
3 years ago
11

Which statement best explains acceleration? A. It is the total distance covered over a period of time. B. It is a change in velo

city over a period of time. C. It is a change in displacement over a period of time. D. It is a change in direction over a period of time.
Physics
2 answers:
tatuchka [14]3 years ago
8 0

I think the answer is C.

Mnenie [13.5K]3 years ago
4 0

C and D can be examples.  B is the whole definition.

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A devout halloweener not only dressed as an astronaut, but travelled to the moon for the full experience. The astronaut jumps on
nikdorinn [45]

Answer:

2.78 m

Explanation:

At the peak, the velocity is 0.

Given:

a = -1.6 m/s²

v₀ = 2.98 m/s

v = 0 m/s

x₀ = 0 m

Find:

x

v² = v₀² + 2a(x - x₀)

(0 m/s)² = (2.98 m/s)² + 2(-1.6 m/s²) (x - 0 m)

x = 2.775 m

Rounded to 3 sig-figs, the astronaut halloweener reaches a maximum height of 2.78 meters.

5 0
3 years ago
Find the Maclaurin series for f(x) using the definition of a Maclaurin series. [Assume that f has a power series expansion. Do n
jenyasd209 [6]

The statement about pointwise convergence follows because C is a complete metric space. If fn → f uniformly on S, then |fn(z) − fm(z)| ≤ |fn(z) − f(z)| + |f(z) − fm(z)|, hence {fn} is uniformly Cauchy. Conversely, if {fn} is uniformly Cauchy, it is pointwise Cauchy and therefore converges pointwise to a limit function f. If |fn(z)−fm(z)| ≤ ε for all n,m ≥ N and all z ∈ S, let m → ∞ to show that |fn(z)−f(z)|≤εforn≥N andallz∈S. Thusfn →f uniformlyonS.

2. This is immediate from (2.2.7).

3. We have f′(x) = (2/x3)e−1/x2 for x ̸= 0, and f′(0) = limh→0(1/h)e−1/h2 = 0. Since f(n)(x) is of the form pn(1/x)e−1/x2 for x ̸= 0, where pn is a polynomial, an induction argument shows that f(n)(0) = 0 for all n. If g is analytic on D(0,r) and g = f on (−r,r), then by (2.2.16), g(z) =

3 0
3 years ago
Bonsoir pouvez vous m'aider svp.<br>Mathématiques
LenaWriter [7]

bonsoir, je peux vous aider avec les maths laissez-moi comprendre merci

4 0
4 years ago
If a car accelerates from a speed of 10 m/s at an acceleration of 2 m/s2 for 3s.
Flauer [41]

Answer:

\boxed{\sf Final \ speed \ of \ the \ car = 16 \ m/s}

Given:

Initial speed (u) = 10 m/s

Acceleration (a) = 2 m/s²

Time taken (t) = 3s

To Find:

Final speed (v) of the car

Explanation:

From equation of motion we have:

\boxed{ \bold{v = u + at}}

By substituting value of u, a & t in the equation we get:

\sf \implies v = 10  + 2\times 3 \\  \\ \sf \implies v = 10 + 6 \\  \\ \sf \implies v = 16 \: m {s}^{ - 1}

\therefore

Final speed (v) of the car = 16 m/s

3 0
4 years ago
Please help I'll mark brainliest NO LINKS
Bond [772]

Answer:C

Explanation:

7 0
3 years ago
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