This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: homework 02 FONTENOT, BRIAN Due: Jan 28 2008, 4:00 am 1 Question 1, chap 2, sect 5. part 1 of 3 10 points In deep space (no gravity), the bolt (arrow) of a crossbow accelerates at 129 m / s 2 and attains a speed of 125 m / s when it leaves the bow. For how long is it accelerated? Answer in units of s. Question 2, chap 2, sect 5. part 2 of 3 10 points What speed will the bolt have attained 4 . 5 s after leaving the crossbow? Answer in units of m / s. Question 3, chap 2, sect 5. part 3 of 3 10 points How far will the bolt have traveled during the 4 . 5 s? Answer in units of m. Question 4, chap 2, sect 5. part 1 of 2 10 points A speed boat moving at 30 . 2 m / s ap proaches a nowake buoy marker 75 . 4 m ahead. The pilot slows the boat with a con stant acceleration of 4 . 2 m / s 2 by reducing the throttle. How long does it take the boat to reach the buoy? Answer in units of s. Question 5, chap 2, sect 5. part 2 of 2 10 points What is the velocity of the boat when it reaches the buoy? Answer in units of m / s. Question 6, chap 2, sect 6. part 1 of 1 10 points A ball is thrown straight up from the ground with an initial velocity of 37 . 2 m / s; at the same instant, a ball is dropped from the roof of a building 20 . 8 m high. After how long will the balls be at the same height? Answer in units of s. Question 7, chap 2, sect 5. part 1 of 1 10 points A baby sitter pushing a stroller starts from rest and accelerates uniformly at a rate of 0.705 m/s 2 ....
View Full
Document
 Spring '08
 Turner
 Physics, Gravity, Work

Click to edit the document details