Assessment Questions Which of these expresses a vector quantity? 10 kg

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Assessment Questions Which of these expresses a vector quantity? 10 kg 10 kg to the north 10 m/s 10 m/s to the north

Assessment Questions Which of these expresses a vector quantity? 10 kg 10 kg to the north 10 m/s 10 m/s to the north Answer: D

Assessment Questions An ultra-light aircraft traveling north at 40 km/h in a 30-km/h crosswind (at right angles) has a groundspeed of 30 km/h. 40 km/h. 50 km/h. 60 km/h.

Assessment Questions An ultra-light aircraft traveling north at 40 km/h in a 30-km/h crosswind (at right angles) has a groundspeed of 30 km/h. 40 km/h. 50 km/h. 60 km/h. Answer: C

Assessment Questions A ball launched into the air at 45° to the horizontal initially has equal horizontal and vertical components. components that do not change in flight. components that affect each other throughout flight. a greater component of velocity than the vertical component.

Assessment Questions A ball launched into the air at 45° to the horizontal initially has equal horizontal and vertical components. components that do not change in flight. components that affect each other throughout flight. a greater component of velocity than the vertical component. Answer: A

Assessment Questions When no air resistance acts on a fast-moving baseball, its acceleration is downward, g. due to a combination of constant horizontal motion and accelerated downward motion. opposite to the force of gravity. at right angles.

Assessment Questions When no air resistance acts on a fast-moving baseball, its acceleration is downward, g. due to a combination of constant horizontal motion and accelerated downward motion. opposite to the force of gravity. at right angles. Answer: A

Assessment Questions When no air resistance acts on a projectile, its horizontal acceleration is g. at right angles to g. upward, g. zero.

Assessment Questions When no air resistance acts on a projectile, its horizontal acceleration is g. at right angles to g. upward, g. zero. Answer: D

Assessment Questions Without air resistance, the time for a vertically tossed ball to return to where it was thrown is 10 m/s for every second in the air. the same as the time going upward. less than the time going upward. more than the time going upward.

Assessment Questions Without air resistance, the time for a vertically tossed ball to return to where it was thrown is 10 m/s for every second in the air. the same as the time going upward. less than the time going upward. more than the time going upward. Answer: B