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Minchanka [31]
3 years ago
15

For an object to be in projectile motion, what force must be acting on it

Physics
1 answer:
Lina20 [59]3 years ago
3 0

Answer:

In projectile motion, only the force of gravity (weight) acts on the object.

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A train 471 m long is moving on a straight track with a speed of 75.1 km/h. The engineer applies the brakes at a crossing, and l
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Answer:

t = 37.6 s

Explanation:

As we know that train is initially moving with the speed

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now we know that

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now we can use kinematics here

v_f^2 - v_i^2 = 2 a d

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Now the time to cross that junction is given as

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Explanation:

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