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belka [17]
3 years ago
13

How long will it take a car to acceleration from 15.2ms to 23.Ms if the car has an average acceleration of 3.2m\s

Physics
1 answer:
m_a_m_a [10]3 years ago
8 0

Answer: 2.43 s

Explanation:

Initial velocity is u=15.2\ m/s

Final velocity v=23\ m/s

Average acceleration is a_{avg}=3.2\ m/s

Average acceleration is change in velocity in the given amount of time

\therefore a_{avg}=\dfrac{v-u}{t}\\\\\Rightarrow 3.2=\dfrac{23-15.2}{t}\\\\\Rightarrow t=\dfrac{7.8}{3.2}\\\\\Rightarrow t=2.43\ s

Thus, 2.43 s is required to acquire that average acceleration with 23 m/s velocity .

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4 0
3 years ago
An airplane touches down on the runway with a speed of 70 m/s2. Determine the airplane after each second of its deceleration.
ivann1987 [24]
<span>vf^2 = vi^2 + 2*a*d
---
vf = velocity final
vi = velocity initial
a = acceleration
d = distance
---
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---
0 = 55*55 + 2*(-2.5)*d
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</span>
5 0
3 years ago
A 7.0kg object rests on a horizontal frictionless surface. What is the magnitude of the horizontal
sukhopar [10]

Answer:

16.1 N

Explanation:

From the question,

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