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White raven [17]
3 years ago
14

Acceleration is always measured in meters per second squared. Why is acceleration not measured in meters per second like speed?

Explain.
Physics
1 answer:
Taya2010 [7]3 years ago
6 0

Answer:

Because 'distance per second' is a velocity, not an acceleration.

Explanation:

Because 'distance per second' is a velocity, not an acceleration. For example, at 1 m/s an object is travelling a distance of 1 metre every second. But a rate of acceleration is a steady increase in velocity. So at 1 m/s^2, an object's velocity is increasing by 1 m/s every second.

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A runner starts from rest and in 2 s reaches a speed of 7 m/s. If we assume that the speed changed at a constant rate (constant
PtichkaEL [24]

Answer:

v=3.5\frac{m}{s}

Explanation:

The average speed is defined as:

v=\frac{\Delta x}{\Delta t}

Using the equations for uniformly accelerated motion, we calculate the runner's acceleration:

a=\frac{v_f-v_o}{2}\\a=\frac{7\frac{m}{s}-0\frac{m}{s}}{2s}\\a=3.5\frac{m}{s^2}

Now, we can calculate the distance that the runner travels:

\Delta x=v_0t+\frac{at^2}{2}\\\Delta x=(0\frac{m}{s})(2s)+\frac{3.5\frac{m}{s}(2s)^2}{2}\\\Delta x=7m

Finally, we calculate the runner's average speed:

v=\frac{7m}{2s}\\v=3.5\frac{m}{s}

4 0
3 years ago
What is the kinetic energy in joules of a 870-kg automobile traveling at 95 km/h?
Ray Of Light [21]

Answer:

The kinetic energy is 303178 Joule

Explanation:

We must change the speed units to m / s =

1km ---- 1000meters

1h ----- 3600 seconds

v = (95km 1000m / km) / (1h x 3600s / h) = 26, 4 m / s

We use the Kinetic Energy formula: Ec = 1/2 m x v ^ 2

Ec = 1/2 x 870 kg x (26, 4) ^ 2 = 303177, 6 Joule

5 0
4 years ago
If the cross-sectional area of a wire is decreased while all other factors remain the same, how will the resistance change?
anzhelika [568]

Answer:

The answer is OA it will increase.

Explanation:

6 0
3 years ago
Read 2 more answers
7) A moving object is rolling on a surface that is 5 m off the ground. The object is moving at a constant speed of 4 m/s. If the
Artemon [7]

131.2 J and The last one on number 8

I gave the same answer and it passed.

5 0
3 years ago
A bicycle has a weight of 102kg and is moving to the right with 400 newtons of force, what is the force of the bicycle
WARRIOR [948]

Answer:

The answer is "=4\ \frac{m}{s^2}"

Explanation:

In this question, the force value is given and the acceleration is missing that's why the calculation of the acceleration can be defined as follows:

Formula:

F= m \cdot a\\\\where \\\\F= force = 400 \ N \\\\m= mass = 102 \ kg \\\\a = Acceleration \\

\to a=\frac{F}{m} \\\\

       = \frac{400}{102}\\\\=3.921\\\\=4 \frac{m}{s^2}

5 0
3 years ago
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