8) Two identical objects A and B fall from rest from different heights to the ground...

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8) Two identical objects A and B fall from rest from different heights to the ground and feel no appreciable air resistance. If object B takes TWICE as long as object A to reach the ground, what is the ratio of the heights from which A and B fell? AhA/hB=1/√√/2 B) hA/hB=1/8 C) hA/hB-1/2 D) hA/hB=1/4 (9) An airplane is flying at a speed of 2.00 102 m/s in level flight at an altitude of 8.00 102 m. A package is to be dropped from the airplane to land on a target on the ground. Ignore air resistance. (a) At what horizontal distance away from the target should the package be released so that it lands on the target? 10) A car starts from rest and accelerates with a constant acceleration of 1.00 m/s2 for 3.00 s. The car continues for 5.00 s at constant velocity. How far has the car traveled from its starting point? A) 19.5 m B) 9.00 m 15.0 m D) 4.50 m E) 24.0 m 11) What is the magnitude of the cross product of a vector of magnitude 2.00 m pointing east and a vector of magnitude 4.00 m pointing 30.0° west of north? A) 8.00 B) 4.00 C) -6.93 D) 6.93 (E)-4.00 8) Two identical objects A and B fall from rest from different heights to the ground and feel no appreciable air resistance. If object B takes TWICE as long as object A to reach the ground, what is the ratio of the heights from which A and B fell? AhA/hB=1/√√/2 B) hA/hB=1/8 C) hA/hB-1/2 D) hA/hB=1/4 (9) An airplane is flying at a speed of 2.00 102 m/s in level flight at an altitude of 8.00 102 m. A package is to be dropped from the airplane to land on a target on the ground. Ignore air resistance. (a) At what horizontal distance away from the target should the package be released so that it lands on the target? 10) A car starts from rest and accelerates with a constant acceleration of 1.00 m/s2 for 3.00 s. The car continues for 5.00 s at constant velocity. How far has the car traveled from its starting point? A) 19.5 m B) 9.00 m 15.0 m D) 4.50 m E) 24.0 m 11) What is the magnitude of the cross product of a vector of magnitude 2.00 m pointing east and a vector of magnitude 4.00 m pointing 30.0° west of north? A) 8.00 B) 4.00 C) -6.93 D) 6.93 (E)-4.00