Name: Date: Section: Sky diving and terminal velocity Multiple Choice questions: 1. What is terminal velocity? a. The velocity at which an object stops moving. b. The maximum velocity that an object can reach when falling through a fluid. c. The velocity at which an object starts moving. d. The velocity at which an object changes direction. 2. When falling under the influence of air resistance and dropped from the same height, which will fall to the ground at a faster rate? A. a mouse B. an elephant C. the same D. Can't be determined. 3. Which of the following variables will have a direct effect upon the amount of air resistance experienced by an object? (That is, for which of these quantities will an increase lead to a resulting increase in the air resistance force?) a. Speed b. air density c. surface area d. All of the above 4. What factors affect the terminal velocity of an object? a. mass, size, shape, density, viscosity b. temperature, pressure, volume c. friction, acceleration, velocity d. weight, speed, color 5. What is the difference between mass and weight? a. Mass is a measure of the weight of an object, while weight is a measure of the volume of an object. b. Mass is a measure of the force exerted on an object due to gravity, while weight is a measure of the amount of matter in an object. c. Mass and weight are the same thing. d. Mass is a measure of the amount of matter in an object, while weight is the force exerted on an object due to gravity.Short answer questions: 1. At A, the diver has just jumped; Draw Fair force arrows to show how the force of air resistance changes on the falling skydiver. At B The diver is accelerating at less rate, C diver reached terminal velocity, D diver opened parachute and at E, the diver just before reaching the ground. (4 marks) B D E Fgrav = 1000 N Fgray = 1010N gray = 1000N Foray = 100 N Fgrav = 1010 N 2. Fill in the blanks in the following paragraph. (3 marks) As an object moves faster and faster, the amount of air resistance (increases, decreases) until a state of terminal velocity is reached. Once terminal velocity is reached, the force of air resistance is (greater than, less than, equal to) the force of gravity. Hence, the object will (continue to accelerate, stop its motion, stop its acceleration, move back up to its starting position)