Okay?

Review : Practice
A. Chapter 1: Sig.figs. scientific Notation, conversion of units
1. Determine the bod of sig.figs in the following and write it in a scientific notation
a) 409.100 b) 501,000,000 c) 0.0000000405 d) 200.00 e) 0.032 f) 10000
2. mastermind the following operations and round off the utmost answer using the rules of sig.fig.s
a) 8 x 4.5 b) 30.05/ 2.6 c) 4.50 + 21.8 d) 3660.0 + 0.08 15.8 e) 450/20.0 x 2
3. Convert the following:
a) 440inches ----> km b) 85mi/hr----> cm/s c) 300mm ----> um d) 250m/s ---> ft/hr
B.Chapter 2
1. A machine starts from rest and by and by 7 seconds it is moving at 42m/s. What is the cars average acceleration?
2. A car is moving at a changeless acceleration and covers a outmatch of 1500m. The final speed of the car is 80m/s. How long does it take the car to cover the 1500m?
3. If your average speed for a 5-hr trip is 35mi/hr, calculate the distance travelled.
4. If the breaking distance for your car at a certain speed is 200ft and after reacting to a situation, you have managed to stop your car in 4s. Calculate the magnitude of the acceleration

Key Answer
# of sig.figs. scientific Notation
A. 1. a) 64.091 x 10 2
b) 3 5.01 x 10 8
c ) 3 4.05 x 10 -8
d) 5 2 x 10 2
e) 2 3.2 x 10 -2
f) 1 1 x 10
2. a) 40 b) 12 c) 26.3 d) 3644.3 e) 50
3. a) 440in x 2.



54cm x 1m x 1km = 0.11km
1 in 100cm 1000m
b) 85mi x 1.61km x 1000m x 100cm x 1hr = 3800cm/s
hr 1 mi 1km 1m 3600s
c) 300mm x 1 x 10-3m x 1um = 300 000 um
1mm 1x 10-6m
d)...If you want to get a wide essay, order it on our website: Orderessay



If you want to get a full essay, wisit our page: write my essay .