science
Grade-9
Easy

Question

The displacement of section C is ____ m.

hintHint:

120 m

The correct answer is: 120


    The area under the slope has two geometrical shapes: triangle and square
    displacement  = area of triangle + area of square 
    A r e a space o f space t r i a n g l e space equals space 1 half cross times left parenthesis 8 minus 5 right parenthesis space cross times left parenthesis 50 minus 30 right parenthesis space
A r e a space o f space t r i a n g l e space equals space 1 half cross times 3 cross times 20 space
A r e a space o f space t r i a g n l e space equals space 30 m squared
    A r e a space o f space s q u a r e space equals space 30 space cross times space left parenthesis 8 minus 5 right parenthesis
A r e a space o f space s q u a r e space equals space 30 space cross times space 3 space equals space 90 m squared
    Displacement of the object = 90 + 30 = 120m

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