Ap Physics Semester 1 Mc + Answers Exam Questions (96 Terms) With Verified Definitions Updated 2024

As the crate slides a distance d, how does the new gain in kinetic energy compare to the ∆K {Ans: new gain is less since less horizontal v since Fcosθ is decreasing}(for 17 & 18) A crate is on a horizontal frictionless surface. A force of magnitude F is exerted on the crate at an angle θ to the horizontal, as shown above, causing the crate to slide to the right. The surface exerts a normal force of magnitude FN on the crate. As the crate slides a distance d, it gains an amount of kinetic energy ∆K.While F is kept constant, the angle is now doubled but is still less than 90o. Assume the crate remains in contact with the surface. {Ans: }boxes stacked and force on one another {Ans: equal newton's third law}A block of known mass hanging from an ideal spring of known spring constant is oscillating vertically. A motion detector records the position, velocity, and acceleration of the block as a function of time. Which of the following indicates the measured quantities that are sufficient to determine whether the net force exerted on the block equals the vector sum of the individual forces