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evablogger [386]
3 years ago
6

Which statement best explains acceleration?

Physics
2 answers:
laila [671]3 years ago
8 0
Acceleration is just how fast velocity is changing in a certain time. Simply subtract the final velocity from initial velocity, then take that number and divide that by the change in time. If that sounds familiar, it's because it's the same formula you use to find the slope of a line. If you've done calculus, it's finding the secant line, which means you've found the average acceleration using the (change in v)/(change in t). If you need the instantaneous acceleration, you need to take the derivative of your function at a certain time(also calculus.) ignore the last two sentences if you haven't taken calc1
Alexxx [7]3 years ago
5 0
Acceleration is the ratio of a change in velocity  to the time over which the change happend
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determine the quantity of work done when a crane lifts a 100-n block from 2m above the ground to 6m above the ground
Mekhanik [1.2K]
100n divided by 8m because 2m and 6m are like terms. Hope that helps:)
6 0
3 years ago
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A plane flies at 400 north of East for 150 miles,then flies 200 miles at an angle of 150 west of North. What is the plane's fina
ivanzaharov [21]

Answer:

341.46miles

Explanation:

Find the diagram attachment.

To get the displacement D, we will use the cosine rule as shown;

D² = 200²+150²-2(160)(400)cos65°

D² = 40000+22500-128000cos65°

D² = 62500+54095.14

D² = 116595.14

D = √116595.14

D= 341.46 miles

Hence the plane final displacement is 341.46miles

3 0
2 years ago
During a medical evaluation, the doctor can __________.
WINSTONCH [101]
<span>During a medical evaluation, the doctor can D. all of the above. It is the doctor's duty to do all of these things - to establish some guidelines for activities, to see whether these programs are appropriate for the person in question, and to help them pick activities that will be safe for them and which they will be able to do without harming their bodies. These are all the things that doctors do in order to help their patients lead a safe and healthy life.</span>
3 0
3 years ago
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Two forces, one four times as large as the other, pull in the same direction on a 10kg mass and impart to it an acceleration of
notsponge [240]

Answer:

The acceleration of the mass is 2 meters per square second.

Explanation:

By Newton's second law, we know that force (F), measured in newtons, is the product of mass (m), measured in kilograms, and net acceleration (a), measured in meters per square second. That is:

F = m\cdot a (1)

The initial force applied in the mass is:

F = (10\,kg)\cdot \left(2.5\,\frac{m}{s^{2}} \right)

F = 25\,N

In addition, we know that force is directly proportional to acceleration. If the smaller force is removed, then the initial force is reduced to \frac{4}{5} of the initial force. The acceleration of the mass is:

\frac{25\,N}{20\,N} = \frac{2.5\,\frac{m}{s^{2}} }{a}

a = 2\,\frac{m}{s^{2}}

The acceleration of the mass is 2 meters per square second.

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3 years ago
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Keith_Richards [23]

Answer:

c

Explanation:

7 0
3 years ago
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