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Paha777 [63]
3 years ago
7

Barbara pushes her friend Sharon on a skateboard. Barbara applies a force of 225 N and Sharon's acceleration is 2.3 m/s2. What i

s the combined mass of Sharon and her skateboard?
Physics
2 answers:
saw5 [17]3 years ago
5 0

Answer:

98 kg

Explanation:

A P E X

Gnesinka [82]3 years ago
3 0
F = m*a
(Force) = (mass x acceleration)

1)     Plug the numbers into the corresponding variables using parentheses:

(225) = m*(2.3)

2)     Divide 2.3 on each side so that  the variable and the numbers are not separate sides 

225/2.3 = m* 2.3/2.3
97.83 = m

3)     Rewrite your answer.

The combined mass of Sharon and her skateboard is 97.83 kg. 
(Remember that kg or kilograms is the proper SI Unit for mass)\

Hope this helps!! 



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now we'll add this value to the initial position of the car

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Answer:

Check the explanation

Explanation:

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use, 1/u + 1/v = 1/f

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The image is virtual

The image is upright

given

R = 1.5 cm

object distance, u = 1.1 cm

focal length of the ball, f = -R/2

= -1.5/2

= -0.75 cm

let v is the image distance

use, 1/u + 1/v = 1/f

1/v = 1/f - 1/u

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v = -0.446 cm <<<<<---------------Answer

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Kindly check the diagram in the attached image below.

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