MRS. ANNA WARDJAMES MARTIN MS

Acceleration

DO NOW!!!

1. Kanesha was shopping at Concord Mills mall. She decided to go over to Forever 21. If she was walking at a speed of 1 m/s, how far would she have walked if it took her 90 seconds to get there?

2. Chyna was chasing Destiney down the hallway one afternoon…it took 15 seconds for Chyna to catch her 75 meters down the hall. What was her speed?

3. Brian was throwing up a tennis ball in the air. It took 2 seconds for the ball to reach a height of 18 meters. What was the ball’s velocity?

Annoucements

Outside activities have been canceled due to the behavior on Wednesday in every class.

Quiz today

Punnett Squares Test Corrections are needed by Monday for Homework Retests will be administered ASAP

Agenda

Racecar lab

Helpful tool

Review Problems

Quiz

Notes on Acceleration

SPEED FORMULA

PLACE IN ALPHABETICAL ORDER

COVER OR SHADE THE LETTER YOU ARE SOLVING FOR

Racecar Lab

Expectations:

Everyone completes and individual sheet

You will work in groups (See group assignment sheets)

Practice Problem #1

Ileyah was riding her bicycle to visit Mariah. (They’ve missed seeing each other in class!) Mariah lives 1.2 km away. If it took Ileyah 2 minutes to get there, what was her speed?

Answer: D= 1.2 kmT= 2 minS =?

Practice Problem #2

Bryson was wandering around the classroom in circles. While he was wandering, he managed to walk 1 mile during 1 hour of class time. What is his rate of speed?

Answer:D = 1 mileT = 1 hourS = ?

Practice Problem #3

Dynasty is amazing at basketball! When she shoots a free throw, it travels at a 5 m/s. If the basketball hoop is 10 meters away, how long does it take her free throw shot to make it through the basket?

AnswerD= 10 mT= ???S = 5 m/s

Practice Problem #4

Ms. Hartberger, Ms. Britain, and Mrs. Ward took a weekend trip to Myrtle Beach. It took them 4 hours to reach their hotel driving an average speed of 60 miles per hour. How far is their hotel from Charlotte?

Answer:D= ?T= 4 hoursS= 60 mi/hr

Practice Problem #5

Jamias took a plane to visit his family in Miami. If his flight from Charlotte to Miami took 1.5 hours and he traveled at a rate of 350 mi/hr, how far is Miami from Charlotte?

Answer:D =?T = 1.5 hoursS = 350 mi/hr

Practice Problem #6

Charles took a trip to New York City last summer. New York is 650 miles from Charlotte. If it took 12 hours to drive there, what was his velocity?

Answer:

D=650 milesT=12 hoursV=???Direction = North

Practice Problem #7

Antwan was dropping a ball off of his room from 10 meters. If it took the ball 1 seconds to hit the ground, what was the ball’s velocity?

Answer:

D = 10 metersT = 1 secondsV = ???Direction = downwards

Practice Problem #8

Brionna won the 100 meter dash at a velocity of 4 m/s West. How long did it take Brionna to complete the race?

Answer:D = 100 mT = ????V = 4 m/s

Practice Problem #9

Dakenya was traveling North at on her way to the mall at a rate of 45 mi/hr. If it took her 5 minutes to get to the mall, how far did she travel?

HINT: LOOK AT THE UNITS OF TIME!!!! DO THEY MATCH? IF NOT, YOU NEED TO MAKE THEM IN ORDER TO COMPLETE THIS PROBLEM.

60 minutes = 1 hourD = ???? T = 5 minutes V= 45mi/hr North

Practice Problem(s) #10

What is the name of the location of a place or object?

What rate is determined by distance over speed?

What is speed with direction?

What is the term used to describe the point by which we locate the position of other places or objects?

What is the formula for velocity?

QUIZ

1. What is the formula for speed?2. What is velocity?3. Devin and his dad took a trip to Carowinds.

They rode the Drop Zone and fell at a velocity of 10 m/s. If the ride took 6.5 seconds, what was the height of the ride?

4. Christian pushed a desk across the classroom. If he moved the desk 8 meters in 16 seconds, what was his speed?

5. Angelica was walking to electives. If she walked at a speed of 0.5 meters/second and it took her 90 seconds to get to class, what was the distance she traveled?

WHAT IS IT? WHAT CAN IT TELL US?

Acceleration

Acceleration

Speed and direction can change with time.

As velocity changes as the object, changes direction, so can the acceleration.

ACCELERATION is the rate that velocity (speed + direction) change over time.

Changes in Velocity

FORMULA FOR VELOCITY

Occasionally you will see the mark “∆” placed in the formula

∆ is the symbol for change

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Big Bang Theory

Exit Ticket

What is acceleration?

What is the symbol for change?

How can velocity change?

What is velocity?