Chapter 4 Practice Problems 2024-25 PDF

1) Mr Williamson’s car broke down again. Luckily Sarah came by to help him pull it to school. If Mr. Williamson pulls with a force of 1200 Newton’s at an angle of 35o while Sarah pulls with a force of 400. N at an angle of 13o what is the magnitude and direction of the resultant force? 2)...

1) Mr Williamson’s car broke down again. Luckily Sarah came by to help him pull it to school. If Mr. Williamson pulls with a force of 1200 Newton’s at an angle of 35o while Sarah pulls with a force of 400. N at an angle of 13o what is the magnitude and direction of the resultant force? 2) How much force in Newton’s was exerted by a student driver whose 1800 kg car went from 15 mph to rest after plowing through 3 concrete pillars at school, a distance of 33 meters. 3) Daniel Jones was sacked by a lineman whose mass was 120 kg. If the lineman was accelerating at a rate of 3 m/s2 when he hit him, how many Newton’s of force did he exert on poor Danny? 4) Mr. Williamson’s car broke down again. What is the coefficient of friction between the tires and the road if he is pushing his car with a steady force of 550 N and the car weighs 950 kg. 5) In the diagram shown below, if the tension on the ropes are 255 N, what is the mass of the traffic light? 6) The Senior class is trying to finally win the tug-of-war by taking on the six graders from Waiakea Intermediate. What is the net force and who wins if the six graders can pull with a force of 12500 N off center by 5o while the Seniors can pull with a combined force of 12000 N. 7) A group of reindeer are pulling a 1,630 kilogram sled with a horizontal force of 2,970 Newtons. (Ignore friction for both parts)) a) How far will the cart move in 5.2 seconds if starting from rest? b) If Santa, who weighs 2,600 N, gets into the sled, how far will the sleigh travel in 3.9 seconds if the same force is applied and starting from rest? 8) Mr. Tolentino pulls a 38 kilogram block up a hill with an incline of 11o. If he pulls with a force of 118 Newtons, what is the normal force of the block? What would the velocity be (in the X direction) if the block starts from rest and travels 28 meters? Assume there is no friction. 9) A student moves a box of books down the hall by pulling on a rope attached to the box. The student pulls with a force of 185 N at an angle of 25.0o above the horizontal. The box has a mass of 35.0 kg and 𝜇k between the box and the floor is 0.27. Find the acceleration of the box?