3. The most sensitive colors of human vision are ______. (A) yellow and green (B) red and yellow (C) blue and red (D) green and red (E) yellow and orange

2. The first stage of a Saturn V space vehicle consumes fuel and oxidizer at the rate of 1.50 × 10⁴ kg/s, with an exhaust speed of 2.60 × 10³ m/s. What is the acceleration of the vehicle just as it vertically lifts off the launch pad on the Earth if the vehicle's initial mass is 3.00 × 10⁶ kg? (A) 7.40 m/s² (B) 5.37 m/s² (C) 3.20 m/s² (D) 1.48 m/s² (E) None of the above is correct.

3. The most sensitive colors of human vision are ______.
(A) yellow and green
(B) red and yellow
(C) blue and red
(D) green and red
(E) yellow and orange

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