Answer:
1000 N
Explanation:
First, we need to find the deceleration of the running back, which is given by:
where
v = 0 is his final velocity
u = 5 m/s is his initial velocity
t = 0.5 s is the time taken
Substituting, we have
And now we can calculate the force exerted on the running back, by using Newton's second law:
so, the magnitude of the force is 1000 N.
Speed v = initial speed u + acceleration a x time t
v=u+at = 2 + 4*3 = 14 m/s
Answer :First part is what you learned so write what you learned then the other parts is The evidence that the universe is expanding comes with something called the red shift of light. Light travels to Earth from other galaxies. As the light from that galaxy gets closer to Earth, the distance between Earth and the galaxy increases, which causes the wavelength of that light to get longer.
Explanation:
Using a basking spot so some sort of heated object, for example heating lamp or heating pad.
Explanation:
H₂ + Cl₂→ 2HCl chemical reaction
In a chemical reaction, a chemical change occurs when new kinds of products are formed. The products contains the atoms that are combining together and they obey the law of conservation of matter.
In a chemical reaction, elements, compounds and molecules are involved.
The reaction depicted is a typical combination or synthesis reaction in which two species reacts to form products. New compounds are formed
H + H → He + n nuclear reaction
In a nuclear reaction, nuclides combines or they are disintegrated due to their instability.
The above reaction is a typical nuclear fusion reaction in which light hydrogen atoms combines to form a heavy nuclide of helium. The reaction involves the transmutation and production of new element.
Learn more:
chemical reaction brainly.com/question/3953793
Transmutation brainly.com/question/3433940
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