Part One: Momentum and Newton's Second Law 1. Identify and explain if one of the objects in each of these pairs has a greater value for the magnitude of its momentum than the other. (No calculations required). (1) a. A 900.0 kg truck travelling at 60 km/h, or a 500.0 kg car travelling at 60 km/h (1) b. A 15.0 kg object travelling to the right at 5.0 m/s, or a 15.0 kg object travelling to the left at 5.0 m/s (1 ) c. A 900 kg truck at rest, or a 500 kg car at rest (1) d. A 900 kg truck at rest, or a mosquito flying at 2 m/s O N2. The momentum of a 75 g dart is 9.40 kg*m/s east. What is the velocity of the dart? (Remember: vectors have magnitude and direction - work and answers must have both) 3. A 425 g softball is travelling at 18.6 m/s [240]. a. What is the momentum of the softball? b. Identify which of the four vectors below accurately shows the direction of the softball using the polar coordinates method. Sketch the angle on the diagram or use words to explain your choice. (1 mark) 12 N[ Page view | A Read aloud | T) Add text Draw v 4. What is the mass of a boat if it travels at a velocity of 57.0 km/h [E] and has a momentum (3) of 2.15 x 105 kg.m/s [E]? (2 ) 5. Use the concept of Newton's second law to explain why a motorcycle can accelerate at a greater rate than a large truck. Use the equation to support your answer. 6. In video games, high-speed crashes are common. Consider a motorcycle and a car racing against each other down a mountain road. Eventually each vehicle strikes a metal barrier. a. Compare the masses and speeds of each vehicle. Remember to consider the size of (1 ) the motor of each vehicle. N