Please help me with the following questions.

1. A 4.00 kgkg box sits at rest at the bottom of a ramp that is 9.00 mm long and is inclined at 30.0 above the horizontal. The coefficient of kinetic friction is k= 0.40, and the coefficient of static friction is s = 0.43.

A. What constant force F, applied parallel to the surface of the ramp, is required to push the box to the top of the ramp in a time of 6.00 ss?Express your answer to four significant figures and include the appropriate units.

2. Answer C and D

Part A A hockey puck with mass 0.160 kg is at rest at the origin (x=0) on the horizontal, frictionless surface of the rink. At time t = 0 a player applies a force of 0.250 N to the puck, parallel to the x-axis; he What is the position of the puck at t = 2.00 s? continues to apply this force until t = 2.00 s. Express your answer in meters. For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Determining acceleration from force. x = 3.12 m Submit Previous Answers V Correct IDENTIFY and SET UP: Use Newton's second law in component form to calculate the acceleration produced by the force. Use constant acceleration equations to calculate the effect of the acceleration on the motion. EXECUTE: During this time interval the acceleration is constant and equal to FI 0.250 N ar m 1.562 m/s2 0.160 kg We can use the constant acceleration kinematic equations from Chapter 2. x - To = Vort + 2axt2 = 0+ , (1.562 m/s2) (2.00 s)2 - 3.12 m, so the puck is at x = 3.12 m. x = Vor + art = 0 + (1.562 m/s2) (2.00 s) = 3.12 m/s Part B In this case what is the speed of the puck? Express your answer in meters per second. v = 3.12 m/sPart C A hockey puck with mass 0.160 kg is at rest at the origin (x=0) on the horizontal, frictionless surface of the rink. At time t = 0 a player If the same force is again applied at t = 5.00 s, what is the position of the puck at t = 7.00 s? applies a force of 0.250 N to the puck, parallel to the x-axis, he continues to apply this force until t = 2.00 s. Express your answer in meters. For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Determining acceleration from force. ? C = m Submit Previous Answers . Request Answer X Incorrect; Try Again; 5 attempts remaining V Part D In this case what is the speed of the puck? Express your answer in meters per second. VO AEQ ? m/s U = Submit Request AnswerPart A Two blocks connected by a light horizontal rope sit at rest on a horizontal, frictionless surface. Block A has mass 17.0 kg, and block B has mass m. A constant horizontal force F = 60.0 N is While the blocks are moving, what is the tension T in the rope that connects the two blocks? applied to block A (Figure 1). In the first 5.00 s after the force is Express your answer with the appropriate units. applied, block A moves 18.0 m to the right. T - 35.5 N Previous Answers Correct Part B What is the mass of block B? Figure 1 of 1 Express your answer with the appropriate units. ? m = Value Units F Submit Previous Answers Request Answer A BPart A A block of ice with mass 2.00 kg slides 1.47 m down an inclined plane that slopes downward at an angle of 36.90 below the horizontal. If the block of ice starts from rest, what is its final speed? Ignore friction. Express your answer with the appropriate units. ? U = Value Units Submit Request AnswerPart A A child applies a force F parallel to the c-axis to a 9.00 kg sled moving on the frozen surface of a small pond. As the child controls the speed of the sled, the c-component of the force she applies Use the work-energy theorem to find the speed of the sled at 8.0 m. varies with the x-coordinate of the sled as shown in figure Express your answer to two significant figures and include the appropriate units. (Figure 1). Suppose the sled is initially at rest at x = 0. You can ignore friction between the sled and the surface of the pond. For related problemsolving tips and strategies, you may want to HA ? view a Video Tutor Solution of Motion on a curved path. U = Value Units Submit Request Answer Part B Figure 1 of 1 Use the work-energy theorem to find the speed of the sled at 12.0 m. Express your answer to two significant figures and include the appropriate units. F (N) ? 10 U = Value Units Submit Request Answer 5 Provide Feedback x (m) 0 4 8 12 99 290m O CPart A A force in the +-direction with magnitude F(x) = 18.0 N - (0.530 N/m)x is applied to a 6.00 kg box that is sitting on the horizontal, frictionless surface of a frozen lake If the box is initially at rest at x - 0, what is its speed after it has traveled 14.0 m? F(x) is the only horizontal force on the box. Express your answer with the appropriate units. For related problemsolving tips and strategies, you may want to view a Video Tutor Solution of Motion with a varying force ? U Value Units Submit Request AnswerPart A A net force along the x-axis that has x-component Fr = -12.0 N + (0.300 N/m?)x2 is applied to a 4.70 kg object that is initially at the origin and moving in the -x-direction with a What is the speed of the object when it reaches the point z = 8.30 m? speed of 8.60 m/s Express your answer with the appropriate units. ? Value Units Submit Request AnswerPart A A 5.00 kg block is moving at vo = 6.00 m/s along a frictionless, horizontal surface toward a spring with force constant k = 500 N/m that is attached to a wall (Figure 1). The spring has Find the maximum distance the spring will be compressed. negligible mass. Express your answer to three significant figures and include the appropriate units. ? T Value Units Submit Request Answer Part B Figure