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velikii [3]
3 years ago
9

Particle A has less mass than particle B. Both are pushed forward across a frictionless surface by equal forces for 1 s. Both st

art from rest. Which is true? A. A has more momentum. B. B has more momentum. C. A and B have the same momentum D. Not enough information.
Physics
1 answer:
Georgia [21]3 years ago
6 0

Answer:

Both will have the same momentum.

P = M v     momentum

v = a t   for uniform acceleration

P = M a t

But a = F / M

P = M (F / M) t = F t    so both have the same momentum

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Describe one piece of evidence to show light waves do not need a medium travel from one place to another
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Answer:

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5 0
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a baseball pitcher throws a fastball at 98 mph. he also has a slower "changeup" pitch, 75 mph, which he throws identically, same
notsponge [240]

Answer:

For these reasons at 98 mph the path is straighter

Explanation:

To solve this problem we are going to use the kinematic equations, specifically those of projectile launches, let's calculate the distances that the ball travels

     

          X = Vox t

          Y = Yo +  Voy t - ½ g t²

They tell us that the only parameter that changes is the speed, so the distance to the plate is known

          t = Vox / x

 

We replace

         Y- Yo = Voy (Vox / X) - ½ g (Vox / x)²2

       Y -Yo = Vo² sinθ cos θ / x - ½ g Vo² sin²θ / x²

        Y -Yo = Vo² (sinθ cosθ / x - ½ g sin²θ / x²)

The trajectory will be flatter when Y is as close as possible to Yo, when examining the right side of the equation, the amount in Parentheses is constant and to what they tell us that the angles and the distance the plate does not change.

Consequently, of the above, the only amount changes is the initial speed if it increases the square of the same increases, so that the height Y approaches the height of the shoulder, that is, DY decreases. For these reasons at 98 mph the path is straighter

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Answer:

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A 20-ton truck collides with a 1500-lb car and causes a lot of damage to the car. During the collision:
dexar [7]

Answer:

B. the force of on the truck due to the collision is exactly equal to the force on the car.

Explanation:

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6 0
3 years ago
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