Physics Questions & Answers

Physics Questions & Answers - [ ] A student must design an experiment to determine the acceleration of a cart that rolls down a small incline after it is released from rest. The student has access to a timer, a meterstick, and a slow-motion camera that takes a photograph every 1/60 of a second. The angle that the incline makes with the horizontal is unknown, and the length of the incline is unknown. Which of the following procedures could the student use to determine the cart's acceleration? Select two answers. - CORRECT ANSWER- 1. Use the slow-motion camera to film the cart as it rolls down the incline alongside a meterstick that is attached to the incline. 2.Use the timer to record the time it takes the cart to travel alongside a meterstick that is attached to the incline. - [ ] An object is launched upward at angle The trajectory and three positions of the object, X, Y, and Z, are shown in the figure. Position X is higher than position Z with respect to the ground, and position Y is at the object's maximum vertical position. Which of the following claims is correct about the system that consists of only the object? - CORRECT ANSWER- The object's acceleration is the same at positions X, Y, and Z - [ ] An object travels along a straight, horizontal surface with an initial speed of 2 m/s . The velocity of the object as a function of time is given in the table above. Which of the following graphs represents the object's acceleration as a function of time? - CORRECT ANSWER- - [ ] if a pt graph is a straight horizontal line its