A 5.0 x 10 N force is applied at an angle of 30% north of east. This would be the same as applying two forces: a. 43 N east, 7.0 N north b. 35 N east, 15 N north C. 25 N east, 25 N north d. 43 N east, 25 N north e. 25 N east, 15 N north A constant force of 36 N is applied to a mass X (4.0 kg), as shown. Mass X is in contact with mass Y (20.0 kg) on a frictionless surface. What is the magnitude of the force exerted by mass X on mass Y? a. 6.0 N 20 kg b. 12 N 4.0 kg C. d. 30. N d = 36 N X e. 36 N frictionless surface Which of the following graphs shows the relationship between an object's mass (in kg) and its acceleration (in m/s'): a. b. d. K Which of the following statements is true for an object moving with uniform circular motion? a. Speed is constant b. Velocity is constant c. Speed and Velocity are both constant d. Acceleration is constant e. Net Force is constant In a carnival ride the passengers travel in a circle with diameter 18.0 m, every 5.0 s. What is the tangential speed? a. 11 m/s b. 36 m/s c. 230 m/s d.510 m/s e. 0 m/s You have a puck on a string, and you twirl the puck with uniform circular motion in a horizontal circle along frictionless ice. Explain how the following changes would affect the magnitude of the centripetal force. Consider each scenario independent of the others. [3] a. You double the radius Double Halve Stay the same b. You double the speed Double Quadruple Stay the same c. You double the centripetal acceleration Double Halve Stay the same Thinking A 7.0 kg block (m,) is connected over a frictionless pulley to two masses, my = 4.0 kg and m; = 5.5 kg a) The system is held at rest by an applied force acting on mass 1. What is the magnitude in the tension of the string over the pulley (string 1)? [2] string 1 m. string 2 m, b) When the system is released, what is the tension in the second string? [3] m, Two crates are attached by a rope that runs over a frictionless pulley. Crate 1 has a mass of 12 kg, and Crate 2 has a mass of 15 kg. They are both sliding on a frictionless surface at the angles indicated in the diagram. a) Determine the acceleration of the blocks 12 kg 15 kg 0 = 38 0 = 210 b) What is the tension in the rope