Calculating Rates. Speeds Speeds are often described as rates. Ex: MPH = miles per hour MPS = meters per second In all the following slides we will use.

Slides:

Advertisements

Similar presentations

You WANT me to make a paper airplane??? A lesson in calculating the speed of an object.

Advertisements

Question and Answer Samples and Techniques. 1. IN which direction and with what force will the box move?

Time Speed and Distance Time, speed and distance are related to each other by the formulae Distance = Speed X Time Speed = Distance ÷ Time Time = Distance.

Introduction to Distance-Rate-Time Applications Example 1: Jan drives south out of Denver and averages 65mph. How far is she from Denver after 3 hours.

Bike Odometer Finding Speed. Odometer Mr. Ranney loves to ride his bike around town every once and while. He has always wanted to know how fast he was.

Consecutive Integers Linear Problems Objective: Students will be able to solve consecutive integers problems.

Speed 4th Grade science S4P3b.

Transforming Formulas Chapter 4.4. What is a formula? A formula shows a relationship between two or more variables. To transform a formula, you rewrite.

CH 9 SEC 2 SPEED AND VELOCITY CALCULATING SPEED KEY- TO CALCULATE SPEED OF AN OBJECT DIVIDE THE DISTANCE THE OBJECT TRAVELS BY THE AMOUNT OF TIME IT.

Do Now: What is the speed of an object that is standing still? Objective: to define and calculate speed.

1 Speed Learning Objective: To understand and use formulae involving speed. How many units of speed can you think of?

Speed, Velocity and Acceleration What is speed? How is velocity different than speed? What is acceleration? Today’s Goal: Be able to use the proper equations.

Distance & Motion Problems d=rt formula distance chart Copyright © 2013 by Lynda Aguirre1.

Motion. Objectives Define motion. Calculate the speed of a moving object. Distinguish between velocity and acceleration.

Relationship between time, displacement, velocity, acceleration. Kinematic.

Distance Speed and Time Calculating Speed Hrs and Min Calculating Distance Speed Distance or Time : Which Operation Hrs and Min Calculating Time Hrs and.

Using Formulas. Goal: 1.Plugging numbers into formulas. We use formulas to calculate values. 2.Use the formula d = rt to solve for different values.

Distance, Rate, and Time By: Natalie Hammonds. D RT To find distance, cover it up X.

Section 1: Describing Motion. Speed Speed is how far you travel over a period of time. Speed is expressed in the formula s=d/t (speed = distance/time).

 You can use weighted averages to solve uniform motion problems when the objects you are considering are moving at constant rates or speeds.

To Start: 20 Points!! -2(4x + 3y – 4z – 11) 12(11) + 12(14) + 12(24) – 12(9) Use front-end estimation: Estimate the quotient: 29.5 ÷ x.

4-3 Solving Multiplication Equations Standard : PFA Indicator: P9 (same as 4-2)

Distance Formula d = r ∙ t distance = rate ∙ time.

Collision Course An Investigation Collision Course Two cars are on a collision course, heading straight at each other. One car is traveling at 50 miles.

Force and Motion Unit Vocabulary Week 1. S8P3a Determine the relationship between velocity and acceleration.

What is a formula?  An equation that shows a relationship between quantities that are represented by variables  Ex: d = rt, p = l x w, etc…

DISTANCE = RATE*TIME D = rt D = r(t) D = r x t.

As you enter the room: 1.Take a piece of paper from the back. 2.Move to your seat quickly and quietly. 3.Begin work on the problems.

Distance,Rate, and Time. Think! What information would you need to know to find out how long it takes to get to your friend’s house?

Speed, Distance, Time Calculations

Speed How many measurements for speed can you think of?

Copyright 2012, 2008, 2004, 2000 Pearson Education, Inc.

1. If you travel at 10mph for 1 hour, how far do you travel?

Starter Questions 20/01/11 It took me 3 hours and 45 minutes to drive

Calculating Average Speed

Vocabulary Week 1 – You will need 9 cards

CHAPTER 3 SECTION 7.

HW: Worksheet Aim: How do we solve fractional equation?

How far did the following travel :-

To Start: 20 Points!! -2(4x + 3y – 4z – 11) 12(11) + 12(14) + 12(24) – 12(9) Use front-end estimation: Estimate the quotient: 29.5 ÷ 4.83.

Speed, Distance, Time Calculations

Using Formulas.

Mrs. Chastain Vocabulary Week 1 – You will need 9 cards

One light year is equal to the distance traveled by light in one year (through empty space). One light year = 1 ly = 6 trillion miles = 9.5 trillion.

Speed, Velocity, and Acceleration

30 miles in 1 hour 30 mph 30 miles per hour

Speed Distance Time. Intermediate 1. Unit 2..

A B A B C D C D A B A B C D C D A B A B C D C D A B A B C D C D

COURSE 3 LESSON 4-6 Formulas

Speed and Velocity Notes

A car travels a distance of 665miles at

EQ: How Can We Measure Speed?

More Logarithms Graphing and Inverses

Objective SWBAT solve equations for the speed, distance, and time objects move.

Speed, Distance, Time Calculations

Speed, Distance, Time Calculations

Starter Questions Convert the following to minutes :-

Speed, Distance, Time Calculations

Speed, Distance, Time Calculations

Speed, Distance, Time Calculations

An object travels 40 miles in 2 hrs. Calculate its speed?

Speed, Distance, Time Calculations

Speed, Distance, Time Calculations Final Review

Speed, Distance, Time Calculations

What is Speed? Speed: The ratio of the distance an object moves to the amount of time an object moves Average Speed: Speed over the course of the ENTIRE.

5-Minute Check Solve each equation. Check your solution. x/3 =

Objective SWBAT solve equations for the speed, distance, and time objects move.

Unit II – Speed, Motion, Velocity and Acceleration

Speed Distance Time. Intermediate 1. Unit 2..

Speed, Distance, Time Calculations

Presentation transcript:

Calculating Rates

Speeds Speeds are often described as rates. Ex: MPH = miles per hour MPS = meters per second In all the following slides we will use d for distance, t for time and r for rate.

How far? If you traveled at 30 MPH for 3 hours, how far would you go? If you traveled for 10 hours at 60 MPH, how far would you go? What operation did you use to figure the distance?

Formula (or an equation) If 90 miles = 30MPH * 3 hours And 600 miles = 10 hours * 60 MPH Then Distance = rate * time or D = rt

Finding Rate If you go 60 miles in one hour, what is your rate? If you go 60 miles in 2 hours, what is your rate?

Formula for Rate If 60 MPH = 60 miles/ 1 hour and 30 MPH = 60 miles/ 2 hours 30 MPH = 60 miles/ 2 hours What is a formula for figuring rate? r = d/t rate = distance divided by time

Formula for time How long will it take you to go 90 miles at 30 MPH? How long will it take to go 600 mile at 60 MPH? Which operation did you use?

Formula for Time 3 hrs = 90 miles divided by 30 MPH 10 hrs = 600 miles divided by 60 MPH Time = Distance / rate t = d/r

Which is the faster rate? 35 miles in 15 minutes Or 76 miles in 30 minutes r=d/t r=d/t r=35/15 r=2.3 mph r=d/t r=76/30 r=2.5 mph

Which is farther? d = rt 17 mph for 17 minutes Or 11 mph for 22 minutes d = rt d = 17(17) d = 289 miles Or d = rt d = 11 * 22 d = 242 miles

Which takes longest? t=d/r Go 40 miles at 22MPH Or Go 60 miles at 28 mph t =d/r t =40/22 t =1.8 hours t =d/r t =60/28 t = 2.1 hours