SECTION 3Force and Motion in Two Dimensions In your textbook, read about force and motion in two dimensions. Circle the letter of the choice that best completes the statement or answers the question. 1. The equilibrant of a force directed 45 west of north has the direction a. 450 west of north C. 450 south of east b . 450 east of north d. 450 west of south 2. The equilibrant of force in the positive x-direction and a force in the positive y-direction is directed from the origin to the a. first quadrant c. third quadrant b . second quadrant d. fourth quadrant 3. The magnitude of the equilibrant of a 3 N force acting toward the east and a 4 N force acting toward the south is a. 7N b. 5 N C. IN d. -7 N Refer to the passage below to answer questions 4-9 Name ER STUDY GUIDE continued 4. In a coordinate system where the x-axis is parallel to the ramp and the y-axis is perpendicular to the ramp, what are the components of the toy sled's weight? 5. In a coordinate system where the x-axis is parallel to the ground and the y-axis is perpendicular to the ground, what are the components of the toy sled's weight?SECTION 1Vectors In your textbook, read about vectors. For each statement below, write true or rewrite the italicized part to make it true. 8. The representation of a, vector has both length and direction. 9. Velocity and speed are both quantities, but only speed is a vector. 10. Mass is not a vector. Name M tail of the vector is always placed on the origin. 13. If two vectors are represented on a coordinate system and they point in the same direction and have the same length, the vectors are equivalent. 14. When adding two vectors on a graph, you place them tail- to-tail. 6. How large is the normal force acting on the toy sled? 7. What is the magnitude and direction of the force of friction acting on the toy sled? 8. In a coordinate system where the x-axis is parallel to the ramp and the y-axis is perpendicular to the ramp, how large is the net force acting on the toy sled along the x-axis'? 9. Using Newton's second law, calculate the acceleration ot'the toy sled as it moves down the ramp. Refer to the passage below to answer questions 1012. Workers on the back ofa truck gently place a crate with a mass ot'20{}.{} kg on a ramp going down to the ground. The angle the ramp makes with the ground is 30. The crate does not slide down the ramp but is held in place by the force of static friction. 10. Draw a free-body diagram showing all of the forces acting on the crate. 11. Draw a second diagram showing the components of all the forces acting on the crate in a coordinate system that makes it easy to apply the law of friction. 12. Calculate the coefficient of static friction between the ramp and the crate by assuming that the coefficient is the minimum coefcient needed to keep the crate from sliding