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3 years ago

13

when an object moves down and does not stop which force is acting more strongly on the object, friction or gravity? explain

1 answer:

lina2011 [118]3 years ago

7 0

Gravity acts more strongly on the object.

<u>Explanation:</u>

When an object is dropped from a height, it reaches the ground despite friction acting on it because the force of gravity acting on it is stronger than the air resistance and friction. Air resistance and friction acts upward and prevents the ball from falling. However, it is negligible. The gravity acting on the object is so strong that it pulls the object towards earth with a constant acceleration called as acceleration due to gravity which has a constant value of 9.8m/s².

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Answer:

204 m

Explanation:

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In this problem, we have

m = 50 g = 0.05 kg

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Solving the formula for $\Delta h$ , we find the necessary height from which the marble should be dropped:

$\Delta h = \frac{\Delta U}{mg}=\frac{100}{(0.05)(9.8)}=204 m$

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pantera1 [17]

Answer:

Part a)

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Explanation:

Part a)

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Part b)

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