The position of the sun and the moon affect how high the tide is
The relationship between the impulse and the momentum allows to find the result for the question about the contact time is:
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The contact time on the floor is t = 0.60 s
The impulse is the push force on a body and is related to the variation of the amount of momentum.
I = ∫ F. dt = Δp
p = mv
where I is the momentum, F the force, t the time, p the amount of momentum and m the mass .
They indicate the average force F = 330 N, the jump height is y = 12.0 cm = 0.120 m.
F. t = m v_f - m v₀
Let's search with kinematics for the initial speed of the jump.
v² = v₀² - 2 g y
At the highest point the velocity is zero.
0 = v₀² - 2ay
Let's calculate.
v₀ = 1.53 m / s
Suppose that the jumps are elastic, that is, that the speed with which it reaches the ground is equal to the speed with which it leaves, but in the opposite direction.
Let's calculate.
t = 0.60 s
In conclusion using the relationship between impulse and momentum we can find the result for the question about the contact time is:
The contact time on the floor is t = 0.60 s
Learn more about impulse here: brainly.com/question/904448
Among the choices the <span>statements that best explains why the size of the refracting telescope lens is kept small at the cost of reducing its capacity to gather radiations from space is "</span><span>Big lenses do not focus light properly to produce clear images. "</span>
Answer:
(d) −7 C
Explanation:
Like charges attracts and unlike charges repel. When the three charges are are agitated, the +3 C and +4 C will repel to give of +7 C. To create a balance in the system, the third charge will -7 C to give an algebraic sum of zero in the system.