1/5/2012 Solve the worksheet given.
1/10/2012 Answer the questions 1,2 &3 on page 15 of the physics textbook.
1/13/2012 Answer all the questions on page 22 and 23 of the physics textbook.
1/17/2012 Solve the following problems:
1 What is the speed of a rocket that travels 9000 meters in 12.12 seconds?
2 What is the speed of a jet plane that travels 528 meters in 4 seconds?
3 After an impact a paint chip leaves the surface of the satellite at a speed of 96 m/s. After 17 seconds, how far has the chip landed?1/19/2012 Prepare for the test on 20th.
1/20/2012 Solve the worksheet given.
1/24/2012 Solve the problems given in the class.
1/26//2012 Complete the worksheet given in class.
1/30/2012 Complete the problems given in the worksheet.
2/2/2012 Solve the questions given in the worksheet.
2/3/2012 Answer the questions on page 47 of the physics textbook.
2//6/2012 Draw the forces acting at a point to scale given in class and calculate the resultant force from your diagram.
2/7/2012 Answer the question number 6 on page 50 from your textbook.
2/8/2012 Solve the following problems:
1. Gerry the weightlifter can lift a 230 Kg barbell on earth. What will be the weight of the barbell on another planet where the acceleration due to gravity is 274m/s2?
2. A Red Sox hitter Ortiz swings at a 0.15 kg baseball and accelerates it at the rate of 3.0 x 10000 m/s2. How much force does Ortiz exert on the ball?
3. A 20g sparrow crashes into a glass window by mistake with a force of 2.0N. What is the bird's acceleration?
2/22/2012 Read pages 48 and 49 of your physics textbook - circular motion.
2/23/2012 Answer questions 1 to 5 on page 49 of the physics textbook.
2/24/2012 Solve the following problems:
1. An 800 kg car drives with a constant speed of 50 m/s on a circular track with a diameter of 200 m. How much centripetal force is needed to make the car turn?
2. Your 30 kg dog is running in circles at 10 m/s on the end of a 3 m leash. How hard do you have to pull on the leash to keep your dog from running away?
3. Kevin is playing on a merry-go-round in a park. He is hanging on to the railing at the edge of the merry-go-round, 1.5 m from the center. If Kevin has a mass of 65 kg, and the railing pulls him in with 260 N, how fast is he moving?
2/28/2012 Solve the following problems:
- Brooke puts her book weighing 25 N on the table. The area of contact between the table and the book is 0.19m by 0.24 m. Calculate the pressure applied by the book on the table.
- A full coffee mug has a mass of 0.60 Kg. A pressure of 1200 Pa is exerted by the mug on the table. What is the area of the bottom of the mug?
- Miss Ellen was wearing her stilettos at a dance party. During the party she accidentally stepped on her partner’s toes. If Miss Ellen weighs 60 Kgs and the area of the stiletto heel she was wearing is 0.40 cm2, calculate the pressure on her partner’s toes.
26th March - Solve the following questions:
1. Katie whose mass is 30 Kg climbs a tree to rescue her cat who is sitting on a branch that is 8.0m from the ground. How much work does Katie do in order to reach the cat?
2. Russell drags his suitcase 15m from the door of his house to the car at a constant speed with a horizontal force of 95N. How much work has Russell done in the process?
3. Marissa does 3.2 Joules of work in lowering the window shade to a distance of 0.8m. How much force must Marissa exert on the window shade?
3/27/2012 1. Legend has it that an apple fell from a tree and hit Isaac Newon on his head. If a 0.20 Kg apple fell 7.0m before hitting Newton on the head, what was the change in the potential energy ?
2. A 20.0 Kg greyhound ran at a speed of 16.0 m/s on a track. What is the kinetic energy of the dog at that speed?
3/30/2012 Complete the graph for the data collected in the pendulum experiment. Write the lab report according to the following format:
Format for pre-IB [grade 9] Laboratory Report
Aim:
Introduction:
Procedure:
Diagram:
Data table:
Calculation:
Graph:
4/10/2012 Redo the Lab-reports. Make sure all the calculations are done. Calculate 'g' value for all the lengths of the pendulum and compare the values. Write a valid conclusion. Due on 11th April wednesday.
4/11/2012 Answer questions 1,2,3 and 4 on page 119 of the physics textbook.
4/18/2012 Answer the questions on waves from the physics textbook page 125.
4/20/2012 Complete the worksheet given. Write the lab report on 'Hooke's Law'.
4/23/2012 Complete the worksheet given in class.
4/24/2012 Prepare for the test on 25th April.