Since the two trains are passing in opposite
directions, so this means that their relative velocities will be the sum of the
two trains that is:
<span>
relative velocity = (13 + 28) = 41m/s</span>
<span>
a. The passengers aboard on train B will see that train A is
moving at 41m/sec due east</span>
<span>b. The passengers aboard on train A will see that
train B is moving at 41m/sec due west</span>
Answer:
The seismometer records the waves traveling through the interior structure of a planet. Studying seismic waves tells us what might be creating the waves. On Mars, scientists suspect that the culprits may be marsquakes, or meteorites striking the surface
Explanation:
Although, rovers and satellites can teach us a lot, scientists have found a cheaper, more convenient place to study Mars: the Earth. Planetary geologists like Dr. Jim Zimbelman study remote regions on Earth to learn about what early Mars may have been like. (These regions are called analogues.)
<h2>A
fter 5.98 seconds the rock reaches 6 meter</h2>
Explanation:
We need to find when will the rock be 6 meters,
That is displacement = 6 - 26 = -20 m
We have equation of motion s = ut + 0.5 at²
Initial velocity, u = 26 m/s
Acceleration, a = -9.81 m/s²
Displacement, s = -20 m
Substituting
s = ut + 0.5 at²
-20 = 26 x t + 0.5 x -9.81 x t²
4.905 t² - 26 t -20 = 0
t = 5.98 s or t = -0.68 s
Time is always positive,
So after 5.98 seconds the rock reaches 6 meter
Answer: below
Explanation: 1kg of steel is slightly heavier than 1 kg of feathers. 1 kg of feather will displace more air as the density of feather is very less comparitively. More the volume displaced more is the upthrust and less the apparent weight.
