Question

In May 1990 the French TGV train traveled the distance from Paris to Lille, France (127 miles) in 0.819 hours. What was the speed of the TGV in m/s

Answer 1

Answer:

v=69.32 m/s

Explanation:

you have to transfer the distance from mile to meters (from miles to meters multiply by 1609)

so d=204387 m

you have to transfer the time from hour to second (from hour to second multiply by 3600)

so t=2948.4 s

the rule says v=d/t=204387/2948.4= 69.32 m/s

Answer 2

The TGV train has a speed of 69.306 meters per second.

Let suppose that TGV train is travelling at uniform velocity, then we can be calculated its speed by means of the following kinematic equation:

$v = \frac{x}{t}$ (1)

Where:

• $v$ - Speed, in meters per second.
• $x$ - Distance travelled by the train, in meters.
• $t$ - Time, in seconds.

Now we proceed to convert both distance and time in terms of fundamental units:

Distance:

$x = 127\,mi \times 1609\,\frac{m}{mi}$

$x = 204343\,m$

Time:

$t = 0.819\,h \times 3600\,\frac{s}{h}$

$t = 2948.4\,s$

If we know that $x = 204343\,m$ and $t = 2948.4\,s$, then the speed of the TGV train is:

$v = \frac{204343\,m}{2948.4\,s}$

$v = 69.306\,\frac{m}{s}$

The TGV train has a speed of 69.306 meters per second.

We kindly invite you to check this question about kinematics: https://brainly.com/question/24468164