Calculus and Above

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Physics - Part...

Physics -

Part I: Discussion

If an equation is dimensionally correct, does this mean that the equation must be true? If an equation is not dimensionally correct, does this mean that the equation cannot be true? Explain

_______________________________________________________________________

Part II: Pay attention to significat figures. For example, if the answer is 3.14825, write it as 3.15

Chap. 1, #1. The age of the universe is thought to be about 14 billion years. Assuming two significant figures, write this in powers of ten in (a) years, (b) seconds.

Chap. 1, #9. Multiply , taking into account significant figures.

Chap. 1, #10. What is the area of a circle of radius 3.8 x cm?

Chap. 1, #38. One hectare is defined as One acre is How many acres are in one hectare?

Chap. 2, #10. A horse canters away from its trainer in a straight line, moving 116 m away in 14.0 s. It then turns abruptly and gallops halfway back in 4.8 s. Calculate (a) its average speed and (b) its average velocity for the entire trip, using “away from the trainer” as the positive direction.

Chap. 2, #19. A sports car moving at constant speed travels 110 m in 5.0 s. If it then brakes and comes to a stop in 4.0 s, what is its acceleration in ?

Chap. 2, #58. The acceleration due to gravity on the Moon is about one-sixth what it is on Earth. If an object is thrown vertically upward on the Moon, how many times higher

will it go than it would on Earth, assuming the same initial velocity?

Chap. 2, #69. A stone is dropped from the roof of a high building. A second stone is dropped 1.50 s later. How far apart are the stones when the second one has reached a

speed of 12.0m/s?

Part I: Discussion

If an equation is dimensionally correct, does this mean that the equation must be true? If an equation is not dimensionally correct, does this mean that the equation cannot be true? Explain

_______________________________________________________________________

Part II: Pay attention to significat figures. For example, if the answer is 3.14825, write it as 3.15

Chap. 1, #1. The age of the universe is thought to be about 14 billion years. Assuming two significant figures, write this in powers of ten in (a) years, (b) seconds.

Chap. 1, #9. Multiply , taking into account significant figures.

Chap. 1, #10. What is the area of a circle of radius 3.8 x cm?

Chap. 1, #38. One hectare is defined as One acre is How many acres are in one hectare?

Chap. 2, #10. A horse canters away from its trainer in a straight line, moving 116 m away in 14.0 s. It then turns abruptly and gallops halfway back in 4.8 s. Calculate (a) its average speed and (b) its average velocity for the entire trip, using “away from the trainer” as the positive direction.

Chap. 2, #19. A sports car moving at constant speed travels 110 m in 5.0 s. If it then brakes and comes to a stop in 4.0 s, what is its acceleration in ?

Chap. 2, #58. The acceleration due to gravity on the Moon is about one-sixth what it is on Earth. If an object is thrown vertically upward on the Moon, how many times higher

will it go than it would on Earth, assuming the same initial velocity?

Chap. 2, #69. A stone is dropped from the roof of a high building. A second stone is dropped 1.50 s later. How far apart are the stones when the second one has reached a

speed of 12.0m/s?

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