Regents Prep: Physics Multiple-Choice Questions
Regents Prep Physics: Topical Multiple-Choice Question Archive
Use of Topical Archive Multiple-Choice Questions
 Teachers: Feel free to copy and paste any of the multiple-choice questions below for use in creating your own Regents-style assessments. Graphics are easily downloaded by right-clicking on the desired image and selecting either Save Picture As... (Internet Explorer) or Save Image As... (Netscape).

Momentum: Question 1 of 2
 A 1,200-kilogram car traveling at 10. meters per second hits a tree and is brought to rest in 0.10 second. What is the magnitude of the average force acting on the car to bring it to rest? 1.2 × 102N 1.2 × 103N 1.2 × 104N 1.2 × 105N Correct Answer Number: 4 Explanation: Impulse = change in momentum, J=delta p or Ft = mv. We are given m, v and t. Plug numbers in and solve for F.

Momentum: Question 2 of 2
 information below. A 2.0 × 103-kilogram car travels at a constant speed of 12 meters per second around a circular A 1.2-kilogram block and a 1.8-kilogram block are initially at rest on a frictionless, horizontal surface. When a compressed spring between the blocks is released, the 1.8-kilogram block moves to the right at 2.0 meters per second, as shown. What is the speed of the 1.2-kilogram block after the spring is released?   1.4 m/s 2.0 m/s 3.0 m/s 3.6 m/s Correct Answer Number: 3 Explanation: The momentum of the system before is equal to the momentum of the system after or m1v1 = m2v2 v1 = m2v2/m1.

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