Lesson_1.5_Homework_Solution

# Lesson_1.5_Homework_Solution - Lesson 5 Homework 1 For a...

This preview shows pages 1–3. Sign up to view the full content.

Lesson 5 Homework 1. For a projectile motion at an angle θ relative to the level surface, sketch the graphs of (i) y versus t, (ii) x versus t, (iii) v x versus t, and (iv) v y versus t (i) The vertical motion of the projectile is the same as the motion of a vertically projected object. Each second y becomes smaller, it reaches the maximum value and then increases downward. y t (ii) Since the horizontal velocity remains a constant, the horizontal displacement x is directly proportional to time t. x = v x t What is the slope of this graph? x t (iii) v x remains a constant with time. The graph is a horizontal line. v x t

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

View Full Document
(iv) v y initially has a maximum positive value, it decreases to zero at the highest point then increases in the negative direction. v y t 2. The x-component of the velocity of an object moving in a straight line with a sped of 10 ms -1 is 7.0 ms -1 . (i) What is the direction of motion of the object? (ii) What is the y-component of its velocity? (i) v x = 7 ms -1 , v = 10 ms -1 v x = v cos θ 7 = 10 cos θ cos θ = 0.7, θ = 45.6 o (ii) v y = v sin θ = 10 sin 45.6 o = 7.14 ms -1 3. A bullet is projected with a velocity of 300 ms -1 at an angle 7.8 o with the horizontal. What is the velocity of the bullet at the highest point on its trajectory?
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 05/01/2011 for the course PHY 2048 taught by Professor George during the Fall '10 term at Edison State College.

### Page1 / 5

Lesson_1.5_Homework_Solution - Lesson 5 Homework 1 For a...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online