# Physics

6) A school bus moves at 2.2 m/s as it pulls away from the bus stop what is the speed of the bus 20 s later after its speed has increased by 5.225 m/s?

7) The height of a computer screen is 31.25 cm and its width is 47 cm. a) is the area of the screen known to one, two, three, or four significant figures?
b) calculate the area of the screen giving your answer with the correct number of significant figures

8) a parking lot is 144.3 m long and 47.66 m wide a) what is the perimeter of the lot b) what is the area?

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2. 👎 3
3. 👁 1,322
1. 6. V = 2.2 + 5.225 = 7.425 m/s.

7. a. 4 sig. fig.

b. A = 47 * 31.25 = 1469 cm^2.

8. a. P = 2L + 2W.

b. A = L*W.

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2. 👎 5

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