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Mamont248 [21]
3 years ago
7

Is a balance scale used to describe how much matter is in an object

Physics
2 answers:
gtnhenbr [62]3 years ago
7 0
It's used to measure the mass or weight of an object
grin007 [14]3 years ago
6 0
No it is used to measure the weight of an object, matter is determined by velocity
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Consider the motion of the car before brakes are applied:

v₀ = maximum initial velocity of the car before the brakes are applied

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x₀ = distance traveled by the car before brakes are applied

since car moves at constant speed before brakes are applied

Using the equation

x₀ = v₀ t

x₀ = v₀  (0.50)


Consider the motion after brakes are applied :

v₀ = initial velocity of the car before the brakes are applied

a = acceleration = - 10 m/s²

v = final velocity of the car after it comes to stop = 0 m/s

x = stopping distance = initial distance - distance traveled before applying the brakes = 38 - x₀ = 38 - v₀  (0.50)

Using the equation

v² = v²₀ + 2 a x

inserting the values

0² = v²₀ + 2 (- 10) (38 - v₀  (0.50))

v²₀ = 20 (38 - v₀  (0.50))

v₀ = 23 m/s



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