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melisa1 [442]
3 years ago
6

An object accelerates uniformly from 3.0 m/s east to 8.0 m/s east in 2.0 seconds. What is the magnitude of the acceleration of t

he object?
Physics
1 answer:
svlad2 [7]3 years ago
5 0

Answer:

Acceleration = 2.5m/s^2

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Near the top of the Citigroup Center building in New York City, there is an object with mass of 4.00 ✕ 105 kg on springs that ha
jasenka [17]

Explanation:

It is given that,

Mass of an object, m=4\times 10^5\ kg

(a) Time period of oscillation, T = 2.4 s

The formula for the time period of spring is given by :

T=2\pi \sqrt{\dfrac{m}{k}}

Where

k is the force constant

k=\dfrac{4\pi ^2 m}{T^2}

k=\dfrac{4\pi ^2 \times 4\times 10^5}{(2.4)^2}

k=2.74\times 10^6\ N/m

(b) Displacement in the spring, x = 2.2 m

Energy stored in the spring is given by :

U=\dfrac{1}{2}kx^2

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U=6.63\times 10^6\ J

Hence, this is the required solution.

7 0
3 years ago
Does fire have ways to protect itself from changes in the environment
Alexandra [31]

Answer:

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Hope this help you!:)

6 0
3 years ago
Calculate the time (in seconds) needed for a car to accelerating from 0 m/s to 10 m/s at 5 m/s^2?
bazaltina [42]

Answer: 2 s

Explanation: In order to solve this problem we have to use the formule of the final speed  getting with a constant acceleration, it is given by;

Vfinal=Vo+a*t    where Vo is zero.

so then  t=Vfinal/a = (10 m/s)/5 m/s^2= 2 s

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What forms when acid reacts with a base? please help
BARSIC [14]

Answer:

salt. (I think)

Explanation:

they neutralize each other and often this results in salt being formed and leftover

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When you ride your bike around a corner at 10 m/s, you are accelerating. Acceleration is caused by any forces. Sliding friction keeps you in the seat when a car goes around a corner. If you throw a ball into the air, Earth exerts a force on the ball.

5 0
3 years ago
Read 2 more answers
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