1 / 17

PHYS16 – Lecture 20

PHYS16 – Lecture 20. Review: Ch. 1-7 October 25, 2010. Administration. TA Help Sessions Su 8-9 pm, W 8-9 pm, Sa 3-5pm Merrill 116 (around the corner from my office) Online Homework 8 due Sunday, Oct. 31 Formal Lab Report due Monday, Nov. 1. Review Ch. 5 Energy. Practice Question 1.

joelle-moore
Download Presentation

PHYS16 – Lecture 20

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. PHYS16 – Lecture 20 Review: Ch. 1-7 October 25, 2010

  2. Administration • TA Help Sessions • Su 8-9 pm, W 8-9 pm, Sa 3-5pm • Merrill 116 (around the corner from my office) • Online Homework 8 due Sunday, Oct. 31 • Formal Lab Report due Monday, Nov. 1

  3. Review Ch. 5 Energy

  4. Practice Question 1 • I throw ball #1 up with an initial speed of v0, and I throw ball #2 of equal mass down with an initial speed of v0. Just before the balls hit the ground what is the relationship of their kinetic energies? • K1>K2 • K1=K2 • K1<K2 • There is not enough information

  5. Practice Question 2 • F(x)=3x^2+4. What is the work done from x = 1 m to x=3 m? • 34 J • 31 J • 33 J • 18 J

  6. Practice Question 3 • A 300 kg car slows from 60 km/s to 10 km/s. What is the work done on the car? • 5.25E11 J • -5.25E8 J • -5.25E5 J • -5.25E11 J

  7. Practice Question 4 • Which object has more kinetic energy? • 1 kg, 5 m/s • 2 kg, 4 m/s • 3 kg, 3 m/s • 4 kg, 2 m/s • 5 kg, 1 m/s

  8. Practice Question 5 • Which object has more momentum? • 1 kg, 5 m/s • 2 kg, 4 m/s • 3 kg, 3 m/s • 4 kg, 2 m/s • 5 kg, 1 m/s

  9. Practice Question 6 • A horizontal force of 60 N slides a block up a 10 m incline of 30 degrees. Ignore friction. What is the work done by the force to get the block up the ramp? A) 60*10*cos(30) B) 60*10*sin(30) C) 60*cos(30) D) 60*sin(30)

  10. Ch. 6 Energy Conservation

  11. Practice Question 1 • A 50-kg kid is sliding down a ramp with a height of 4 m and a horizontal distance of 3 m. If the frictional force is a constant 60 N, what is the velocity of the kid at the bottom of the ramp?

  12. Practice Question 2 • A mass is attached to a horizontal spring of spring constant 4N/m. If a weight attached to the mass pulls the mass a distance of 0.5 m from equilibrium, how much work was done by the weight on the mass?

  13. Ch. 7 Momentum

  14. Practice Question 1 • In a perfectly inelastic collision the following is not true? A) Objects adhere B) E is conserved C) P is conserved D)F=dp/dt

  15. Practice Question 2 • True or false. In an inelastic collision the kinetic energy after the collision can be greater than the kinetic energy before the collision. A) True B) False

  16. Practice Question 3 • In a click-clack if all balls have equal mass and I take one ball out and put it at height 4 m, how high should the ball on the other side go? A) 4 m B) 2 m C) 0 m D)There is not enough information

More Related