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zysi [14]
2 years ago
10

If an object is accelerating, can the net force acting on it be zero?

Physics
2 answers:
kaheart [24]2 years ago
8 0
No, because if the net force were 0, it would either be at rest or moving in constant velocity.
Ulleksa [173]2 years ago
5 0

Answer:

No, the net force cannot be zero.

Explanation:

From newton's second law,

ΣFnet = ma

Since a is accelerating I.e it is change velocity with respect to time taken, since acceleration can only occur when the force acting on the body is not balanced.

Then Fnet cannot be zero.

Now, if Fnet is zero

Fnet = ma=0

It shows that, the acceleration is zero. So since the body is accelerating, then the net force can not be zero

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A large raindrop-the type that lands with a definite splat-has a mass of 0.0014 g and hits your roof at a speed of 8.1 m/s. a. W
DENIUS [597]

Answer

given,

mass of the drop, m = 0.0014 g

speed of the drop, u = 8.1 m/s

a) Change in momentum is equal to impulse

   final velocity of the drop, v = 0 m/s

   J = m ( v - u )

   J = 0.0014 x 10⁻³ x ( 0 - 8.1 )

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impulse of the roof = - J = 1.134 x 10⁻⁵ kg.m/s

b) time, t = 0.37 m s

   impact of force = ?

  we know

     J = F x t

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5 0
3 years ago
Jason applies a force of 4.00 newtons to a sled at an angle 62.0 degrees from the ground. What is the component of force effecti
Andreas93 [3]
Answer: 1.88 N

Explanation:

Data:

Force = 4.00N
angle = 62°
horizontal force = ?

Solution:

The trigonometric ratio that relates horizontal - leg to hypotenuse is the cosine.

That ratio is:

                        horizontal - leg
cos(angle) = -------------------------
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So, applied to the force, that is:

                             horizontal force
cos (angle) = -----------------------------------
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So, clearing the horizontal component you get:
                                         
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Substitute the data given:

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Answer: 1.88N


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2 years ago
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