Monday, December 9, 2013
9th Grade HW
1) A car advertisement states that a certain car can accelerate from rest to 70 km/h in 7 seconds. Find the car’s
average acceleration.
2) A lizard accelerates from 2 m/s to 10 m/s in 4 seconds. What is the lizard’s average acceleration?
3) A runner covers the last straight stretch of a race in 4 s. During that time, he speeds up from 5 m/s to 9 m/s.
What is the runner’s acceleration in this part of the race?
4) You are traveling in a car that is moving at a velocity of 20 m/s. Suddenly, a car 10 meters in front of you slams
on it’s brakes. At that moment, you also slam on your brakes and slow to 5 m/s. Calculate the acceleration if it
took 2 seconds to slow your car down.
Wednesday, December 4, 2013
9th Grade HW
4.A train moving at a velocity of 15 m/s is accelerated to 24 m/s over a 12 second
period.
5. A plane starting from rest is accelerated to its takeoff velocity of 75 m/s during a 5 second period.
6. A ball rolling down a hill for 9 seconds accelerates from 3 m/s to 34.5 m/s
Thursday, November 28, 2013
Sunday, November 24, 2013
9th Grade Homework
Speed and Velocity Problems
1.What is the average speed of a cheetah that sprints 100 m in 4 s? How about if it sprints 50 m in 2 s?
2.If a car moves with an average speed of 60 km/hr. How far will it travel if it continues this average rate for 4 hrs?
3.A runner makes one lap around a 200 m track in a time of 25.0 s. What was the runner's average speed?
4.A motorist travels 406 km during a 7.0 hr period. What was the average speed?
5.A bullet is shot from a rifle with a speed of 720 m/s. What time is required for the bullet to strike a target 3240 m away?
Thursday, November 21, 2013
Wednesday, November 20, 2013
Tuesday, November 19, 2013
Tuesday, November 12, 2013
Saturday, November 9, 2013
Must Watch!...if you like cars and science
https://www.youtube.com/watch?v=fA4K4AAucVA&feature=youtube_gdata_player
Sunday, November 3, 2013
Thursday, October 31, 2013
Wednesday, October 30, 2013
Monday, October 28, 2013
Saturday, October 26, 2013
Friday, October 25, 2013
Thursday, October 24, 2013
Monday, October 21, 2013
Saturday, October 19, 2013
Thursday, October 17, 2013
Wednesday, October 16, 2013
Tuesday, October 15, 2013
10th Grade Homework
List the Functions of the cell membrane.
Draw a lipid bilayer and label the parts.
Monday, October 14, 2013
Welcome
Welcome parents and students,
In this blog you will be able to see assigned homework, the
latest announcements and important reminders. Also, you will be able to see
sneak peeks of the projects my students are working on, videos of lab assignments,
and other great projects we will be doing at school.
Thanks for visiting!
Ms. Acosta
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