A box slides along a ramp under gravity at a constant velocity. Choose all that are correct from the following. [7 The normal force on the box is perpendicular to the surface of the ramp. The vector sum of all the forces on the box is exactly zero. The box has a non-zero net acceleration. The frictional force on the box is downwards along the surface of the ramp. The vector sum of all the forces on the box is nonzero, and points downwards along the surface of the ramp. The frictional force on the box is greater than the gravitational force. The normal force on the box is vertically downwards. The frictional force on the box is upwards along the surface of the ramp. The frictional force on the box is perpendicular to the surface of the ramp. 2. mm, - ASK YOUR TEACHER The diagram at the right is a freeabody diagram. It uses arrows and force labels to depict the direction and types of forces acting upon an object. Fun-51m" A. What is the net force acting upon the object? (if left or down include a negative sign) pansy" F :60" FP-IIIJN B. What is the direction of the object's acceleration7 O upward O downward O rightward O leftward C. If the thrust force is increased, then the . (Select all that apply) C] acceleration would increase C] net force would increase C] acceleration would decrease [7 net force would decrease 3. [0/1 Points] PREVIOUS ANSWERS OSCOLPHYSAP20164.2.WA.001. For a certain interval of time, an object is acted on by a constant non-zero force. Which of the followmg statements is true for this interval of time? (Select all that apply.) C The object is accelerating. Cl The abject is at rest. The object's velocity changes. C The object's velocity can only increase. The object is moving with constant velocity. X Consider the basic premise of Newton's First Law. Additional Materials Ll Reading ASK YOUR TEACHER 4. [-14 Points] OSCOLPHYSAPZO164.2.WA.006. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER An astrunaut weighing 212 lbs on Earth is on a mission tn the Moon and Mars. (a) What would he weigh in newtons when he is on the Moon? The acceleratiun due to gravity on the Much is onersixth that an Earth :N (b) Haw much would he weigh in newtons when he is on Mars, where the acteleration due ta gravity is 0.38 times that an Earth? :N (c) What is his mass in kilograms on Earth? :m [d] Which 5f the tuliewing are true? (Select all that apply.) Tl His mass on the Moon is greater than his mass on Earth C] His mass on Mars is smaller than his mass on Earth Fl His mass on the Moon is smaller than his mass on Earth C] His mass on Mars is exactly equal t0 his mass an Earth U His mass on Mars is greater than his mass on Earth C] His mass on the Moon is exactly equal to his mass on Earth Additional Materials U Reading 5. [l2 Points] DETAILS OSCOLPHYSAP2016 4.3.WA.007. An object of mass 16.0 kg subjected to a non-zero net force moves with an acceleration of 1.6 mfs2. (a) Determine the net force (in N) acting on it. [Enter the magnitude only.) :N (b) What acceleration (in m/52) would a 32.0kg object have if the same net force is applied to it? S Ma Additional Materials U Reading 6. [-/2 Points] DETAILS OSCOLPHYSAP2016 5.2.WA.027. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A skydiver weighing 925 N opens his parachute at the appropriate height from the ground. The air exerts a significant upward drag force, which is initially greater than the weight of the diver. This helps to slow the skydiver down. What is the diver's acceleration (both direction and magnitude in m/s2) if the magnitude of the drag force is 1165 N? magnitude m/s2 direction ---Select--- v Additional Materials Reading