Title: Please NEED HELP! - Physics WS -- Uniform Linear Motion? Post by: buggingout16 on Oct 21, 2012 Part A. Uniform Linear Motion: Show work and formulas used.
1. A car accerlerates from 10 m/s to 25 m/s in 6.0 s. What was its acceleration? How far did it travel in this time 2. A world class sprinter can reach a top speed of about 11.5 m/s in the first 15.0 m of a race. What is the average acceleration of the sprinter over this distance ? 3. A stone is thrown horozontially at a speed of 23.0 m/s and it strikes the ground 10 m below some time later. Assuming air resistance can be ignored determine: (a) How long it took to reach the ground (b) Its vertical speed at the point of impact (c) Its velocity at the point of impact 4. A person jumps from a fourth-story window 15.0 m above a firefighter's safety net. The survivor stretches the net 1.0 m before coming to rest. (a) What was the speed of the person a the point of impact with the net? (b) What was the average deceleration experienced by the survivor? (c) What would you do to make it "safer" ? Explain Title: Please NEED HELP! - Physics WS -- Uniform Linear Motion? Post by: iliya1 on Oct 21, 2012 Content hidden
Title: Please NEED HELP! - Physics WS -- Uniform Linear Motion? Post by: rjedlicka on Oct 21, 2012 1. acceleration = (Final Velocity - Initial Velocity)/time
(25m/s-10m/s)/60sec =(15m/s)/60sec =15m/s/s or 15 m/s^2 |