1. What quantity is represented by vector vo? (a) A-B (b) A+8 (c) B - A (d) B+A 2. For a level landing projectile: what is the optimal angle to maximize range? (=) Greater than 45 degrees (b) Less than 45 degrees (c) Exactly 45 degrees (d) It depends on other factors, so not enough information 3. A car moving at 60 km/h [E] enters a curve. When it leaves the curve, the velocity of the car is 80 km/h [W]. What is the change in velocity of the car? (3) 120 km/h [E] (b) 120 km/h [W] (c) 60 km/h [WI (d) 0 km/h [W 4. For a frame of reference to be inertial, it must? (=) Undergo positive acceleration (b) Undergo negative acceleration (c) Change direction without changing speed (d) Move in one direction with constant speed 5. Which of the following causes merry-go-round riders to feel as if they are being pushed away from the centre of the ride? (3) Being in an inertial reference frame (b) The Coriolis force (c) Centripetal acceleration (d) Centrifugal force 6. A skier with mass m slides down a slope that makes an incline of 9 with the vertical. Which expression describes the component of the force of gravity parallel to the slope? (a) mg (b) mgsine (c) mgoose (d) mgtane 7. Which statement is true regarding the Coriolis force? (3) The Coriolis force is a real force that accelerates objects moving on the surface of Earth. (b) The Coriolis force is perpendicular to the direction of motion of an object. (c) The Coriolis force was named after a Canadian mathematician. (d) All of the above 8. Two cars, with masses 1200 kg and 2400 kg respectively, are going around the same curve with the same speed. Which statement is true? (3) Both cars experience the same centripetal force. (b) Both carts experience the same centripetal acceleration. (c) The heavier car experiences twice the centripetal acceleration of the lighter car. (d) The heavier car experiences half of the centripetal force of the lighter car. 9. A rotating ride at an amusement park has a period of T. As the ride slows, at one point in time its period becomes 27. How does the centripetal acceleration of the rider change? (a) Decreases by a factor of 2 (b) Decreases by a factor of 4 (c) Increases by a factor of 2 (d) Increases by a factor of 4 _ 10. A motorcycle is moving up a hill at a constant speed of 80 km/h in a straight line. (a) The motorcycle is in equilibrium. (b) The net force on the motorcycle acts up the hill. (c) The net force on the motorcycle acts down the hill. (d) The net force acting on the motorcycle is equal to the force exerted by gravity