2 years ago

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Physics

1 answer:

Ede4ka [16]2 years ago

6 0

Answer:

72 m

Explanation:

Given:

v₀ = 0 m/s

v = 60 m/s

a = 25 m/s²

Find: Δx

v² = v₀² + 2aΔx

(60 m/s)² = (0 m/s)² + 2 (25 m/s²) Δx

Δx = 72 m

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3 years ago

A friction force of 280 N exists between a cart and the path. If the force of reaction is 766 N, what is the minimum action forc

MatroZZZ [7]

force of friction on the cart is given as

$F_f = 280 N$

here we also know the reaction force due to surface

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so we can say reaction force is given as

$R = \sqrt{F_n^2 + F_f^2}$

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now by force balance we will say

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$F_{min} = \frac{\mu mg}{\sqrt{1 + \mu^2}}$

here we know that

$mg = F_n = 713 N$

$F_{min} = \frac{0.39* 713}{\sqrt{1 + 0.39^2}}$

$F_{min} = 259 N$

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3 years ago

A thermal hazard symbol means your should wear protective clothing so that you do not get burned. True False

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True. If something is thermal, that means that by getting to close to it, you could get burned.

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Answer:

This is how I figured it out:

215.5 rounded to one significant figure is 200
101.02555 rounded to one significant figure is 100.
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Hope this helps!

Explanation:

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3 years ago