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user100 [1]
2 years ago
6

Please help with this :(

Physics
1 answer:
kiruha [24]2 years ago
5 0

Answer:

Below

Explanation:

We can use this formula to find the acceleration of the crate :

     acceleration = net force / mass of object

Plug in our values :

     acceleration = 50 N / 50 kg

                           = 1 m/s^2

     acceleration = 100 N / 50 kg

                           = 2 m/s^2

     acceleration = 150 N / 50 kg

                           = 3 m/s^2

     acceleration = 200 N / 50 kg

                           = 4 m/s^2

Hope this helps! Best of luck <3

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A basketball player jumps 76cm to get a rebound. How much time does he spend in the top 15cm of the jump (ascent and descent)?
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The time for final 15 cm of the jump equals 0.1423 seconds.

Explanation:

The initial velocity required by the basketball player to be able to jump 76 cm can be found using the third equation of kinematics as

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'v' is the final velocity of the player

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'a' is acceleration due to gravity

's' is the height the player jumps

Since the final velocity at the maximum height should be 0 thus applying the values in the above equation we get

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Now the veocity of the palyer after he cover'sthe initial 61 cm of his journey can be similarly found as

v^{2}=3.86^2-2\times 9.81\times 0.66\\\\\therefore v=\sqrt{3.86^2-2\times 9.81\times 0.66}=1.3966m/s

Thus the time for the final 15 cm of the jump can be found by the first equation of kinematics as

v=u+at

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Applying the given values we get

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