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MariettaO [177]
2 years ago
12

Need help with this please

Physics
1 answer:
lutik1710 [3]2 years ago
8 0

Explanation:

this help you this is your answer

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If you exert a force on an object in motion you will change its ____.
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If you exert a force on an object in motion, then depending on the
direction of the force you exert and the direction in which it's already
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In addition to that, you'll change the object's momentum and kinetic energy.
They may increase or decrease ... again depending on the directions of the
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You will not change the object's mass, inertia, weight, color, cost,
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2 years ago
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If a spear is thrown at a fish swimming in a lake, it will often miss the fish completely. Why does this happen?
jek_recluse [69]
The light that makes up the image of the fish is refracted when it leaves the water and enters the air. Your brain thinks the light traveled straight, so the fish is not located in the direction from you that your brain thinks it is.
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3 years ago
In addition to their remarkable top speeds of almost 60 mph, cheetahs have impressive cornering abilities. In one study, the max
Sav [38]

Answer:

the minimum value of the coefficient of static friction between the ground and the cheetah's feet is 1.94

Explanation:

Given that ;

the top speed of Cheetahs is almost 60 mph

In cornering abilities ; the maximum centripetal acceleration of a cheetah was measured to be = 19 m/s^2

The objective of this question is to determine the what minimum value of the coefficient of static friction between the ground and the cheetah's feet is necessary to provide this acceleration?

From the knowledge of Newton's Law;

we knew that ;

Force F = mass m × acceleration a

Also;

The net force  F_{net}  = frictional force \mu_k mg

so we can say that;

m×a = \mu_k mg

where;

the coefficient of static friction \mu_k is:

\mu_k = \dfrac{m*a}{m*g}

\mu_k = \dfrac{a}{g}

\mu_k = \dfrac{19 \ m/s^2}{9.81 \ m/s^2}

\mathbf{\mu_k} = 1.94

Hence; the minimum value of the coefficient of static friction between the ground and the cheetah's feet is 1.94

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7 0
2 years ago
What happens to the current in the other two lamps of one lamp in a three-lamp parallel?
Dima020 [189]
The answer is that; The current will continue unchanged in the other two bulbs, this is because in parallel there is more than one choice for the current to continue to flow uninterrupted. When components are connected in parallel they are connected along multiple paths, thus the same voltage is applied to each component. 
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