Answer:
12 m/s ∧2
Explanation:
The picture attached explains it all and i hope it helps. Thank you
Answer:
Explanation:
Ignore air resistance
The horizontal velocity is
vx =19cos37.2 = 15.134 m/s
The ball travels 30 m in a time of
30 / 15.134 = 1.982 s
In that time, the ball will be at an altitude of
s = vy₀t + ½at²
s = 19sin37.2(1.982) + ½(-9.8)1.982² = 3.5137... m
so the ball clears the bar by
h = 3.5137 - 3.05 = 0.4637... = 0.46 m
Answer:
粗糙錯愕額外此時自由KK預約為我
Explanation:
因為嗚嗚嗚粗糙此次四月蘇澳碩果僅存有一位我也在鶯鶯燕燕
Explanation:
The dimension of the book is 1.75 m × 2.25 m. If the book ends up at its initial position. The displacement of the book is equal to zero as the object reaches to its initial position.
If it completes its motion in 23 s, t = 23 s
Total displacement of the book is equal to its perimeter. It is given by :

The net displacement divided by total time taken is called the average velocity of an object. Here, the displacement is 0. So, average velocity is 0.
The average speed of an object is given by :


v = 0.347 m/s
So, the average speed of the book is 0.347 m/s. Hence, this is the required solution.
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Gravity is pushing you down on the earth while the friction from the ground is pushing you up. Those are the two frictions you must overcome when walking.
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