The bending of waves due to a change in speed is called
1 answer:
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Answer:
F = 180 N
Explanation:
To find the required force you first calculate the angle of the ramp, by using the following relation:
Next, you use the Newton second law to know what is the x component (in a rotated coordinate system) of the gravitational force:
the required force must be, at least, the last force Fx. You know that the weight of the object is 490N = mg. Hence, you have:
the required force is 180N
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TRANSLATION:
Para encontrar la fuerza requerida, primero calcule el ángulo de la rampa, utilizando la siguiente relación:
Luego, usa la segunda ley de Newton para saber cuál es el componente x (en un sistema de coordenadas girado) de la fuerza gravitacional:
la fuerza requerida debe ser, al menos, la última fuerza Fx. Sabes que el peso del objeto es 490N = mg. Por lo tanto, tienes:
Answer:
acceleration or a deceleration
Explanation:
The gradient of a position - time graph represent the velocity.
a straight line indicate a constant velocity (gradient ≠ 0)
when it is a parallel line to the time axis , it indicated no movement
when it is a curved line it indicates a changing velocity (either acceleration or a deceleration) as mentioned in the graph
