Acceleration= change in velocity /time taken
=5/0.25 =20m/s^2
DNA holds or genes, traits and we all have different amounts of chromosomes and that makes us different from other animals. A fishes genes would be different from ours because there DNA is different they have a different set of genes and chromosomes. Hop that Helped. we are genetically different.
Describing motion from each frame of reference:
Since observer A is on one of the train's cars, he will find that he is at rest with respect to the train even when it is pulling away because, he is also moving with respect to the train.
Observer B on the stationary platform will observe that the train is pulling away from the station towards the right of the platform. as is described
Observer C will notice that the train is approaching him in the opposite direction at a speed which is the sum of the speeds at which both the train are traveling
If the conductor applies brakes on the train, since the platform is a stationary frame of reference. The motion will be observed as a simple decelerationg. he will observe that the force due to the brakes will cause the velocity of the train with respect to the train to decrease
Universal law of gravitation effects all objects alike . There will be a constant force of gravity acting on the train that will keep the train on its tracks. The tracks in turn exert a reaction force on the train. There will not be any affect on the train's motion as such( assuming that the train is moving along the tracks and gravitational force is exactly perpendicular)
The lighter one travel with the speed of 0.574 m/sec. Force is defined as the product of mass and acceleration. Its unit is Newton.
<h3>What is force?</h3>
Force is defined as the push or pull applied to the body. Sometimes it is used to change the shape, size, and direction of the body.
The two skaters push off against each other on frictionless ice, then torque act by the one skater on the other is equal.
P₁₂=P₂₁
F₁₂V₁ =F₂₁V₂
625 ×V₁= 725 N× 1.5 m/s
V₁=0.574 m/sec
Hence, the lighter one travel with the speed of 0.574 m/sec.
To learn more about the force, refer to the link;
brainly.com/question/26115859
#SPJ1
This picture is a graph. Do you see the marks over on the left side ?
It says "Brightness". The Low brightness is on the bottom, and the
High brightness is on the top. This shows you that the brightest stars
are the highest ones on the graph.
Now look on the graph. Down near the bottom are Proxima Centauri and
the white dwarfs. Also, our Sun is not too far up. Way up near the top, you
see Supergiants. "Betelgeuse" is on the right side, and "Spica" is on the
left side. Those are the brightest ones on the graph.
The choices in your question are cut off below the bottom of thepicture. But
this much discussion should be enough to help you choose the best answer.
