15241254
Descripción
Test por Jeffrey Piggott, actualizado hace más de 1 año
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Creado por Jeffrey Piggott
hace alrededor de 6 años
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Pregunta 1
Pregunta
Two people are pushing a disabled car.
One exerts a force of 200 N east, the other a force of 150 N east.
What is the resultant force exerted on the car? (Assume friction to be negligible.)
Respuesta
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A) 50 N east
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B) 50 N west
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C) 350 N east
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D) 350 N
Pregunta 2
Pregunta
Two soccer players kick a ball simultaneously from opposite sides.
Red #3 kicks with 50 N of force while Blue #5 kicks with 63 N of force.
What is the net force on the ball?
Respuesta
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13 N in the direction kicked by Red #3.
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113 N in the direction kicked by Red #3.
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13 N in the direction kicked by Blue # 5.
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113 N in the direction kicked by Blue # 5.
Pregunta 3
Pregunta
An airplane heads due north at 100 m/s through a 30 m/s cross wind blowing from the east to the west. Determine the resultant velocity of the airplane (relative to due north).
Respuesta
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104.4 m/s at 29 degrees west of north.
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104.4 m/s at 29 degrees east of north.
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104.4 m/s at 29 degrees north of east.
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Pregunta 4
Pregunta
A mountain climbing expedition establishes a base camp and two intermediate camps, A and B.
Camp A is 11,200 m east of and 3,200 m above base camp.
Camp B is 8,400 m east of and 1,700 m higher than Camp A.
Determine the displacement between base camp and Camp B.
Respuesta
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A
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B 20,203 m
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C
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D
Pregunta 5
Pregunta
Two vectors are considered to be equal if they have same magnitude and ..............
Respuesta
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A different direction
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B positive direction
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C same direction
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D negative direction
Pregunta 6
Pregunta
When we add the following vectors and determine the resultant.
V1 = 3.0 m/s, bearing 45 deg, and
V2 = 5.0 m/s, bearing 135 deg
we get:
Respuesta
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5.83 m/s, 76 deg.
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8.0 m/s, 76 deg.
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5.83 m/s, 104 deg.
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8.0 m/s, 104 deg.
Pregunta 7
Pregunta
Add the following vectors and determine the resultant.
5.0 m/s, 45 deg and 2.0 m/s, 180 deg
The resultant is:
Respuesta
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3.35 m/s, 66.5 deg
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3.85 m/s, 66.5 deg
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3.85 m/s, 32.5 deg
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3.35 m/s 38.5 deg.
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