Chapter 2 Sample Problem Packet

Chapter 2 Sample Problem Packet - car is a x r =0 and the...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 2 Sample Problems
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
1) (a) If a particle’s position is given by x = 4-12t +3t 2 (where t is in seconds and x is in meters), what is its velocity at t = 1s? (b) Is it moving in the positive or negative direction of x just then? (c) Is the speed increasing or decreasing just then? (e) Is there ever an instant when the velocity is zero? If so, give the time t. (f) Is there a time after t=3 seconds when the particle is moving in the negative direction of x? If so give the time t.
Background image of page 2
2) As shown in the diagram, a red car and a green car, identical except for the color, move toward each other in adjacent lanes and parallel to an axis. At time t=0, the red
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: car is a x r =0 and the green car is a x g =220 m. If the red car has a constant velocity of 20 km/hr, the cars pass each other at x = 44.5 m, and if it has a constant velocity of 40 km/hr, they pass each other at x = 76.6 m. What are (a) the initial velocity and (b) the acceleration of the green car? 3) At time t=0, apple 1 is dropped from a bridge onto a roadway beneath the bridge: somewhat later, apple 2 is thrown down from the same height. The diagram below gives the vertical positions y of the apples versus t during the falling, until both apples have hit the roadway. With approximately what speed is apple 2 thrown down?...
View Full Document

This note was uploaded on 01/11/2012 for the course PHYSIC 1 taught by Professor Fairport during the Spring '11 term at Fairfield.

Page1 / 4

Chapter 2 Sample Problem Packet - car is a x r =0 and the...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online