it all depends on Region and how long they have been there some minerals crush faster then some others so some might only take a few thousand while others might take millions

6 0

3 years ago

A 1000-kg car traveling at 70 m/s takes 3 m to stop under full braking. the same car under similar road conditions, traveling at

azamat

We assume $a=const$ (acceleration is constant. We apply the equation
$v^2=v0^2+2as$ where s is the distance to stop $v=0(m/s)$ . We find the acceleration from this equation
$a=-v0^2/(2s)=-70^2/(2*3) =-816.7 (m/s^2)
$
We know the acceleration, thus we find the distance necesssary to stop when initial speed is $v=140 (m/s)$
$s=-v0^2/(2a) =140^2/(2*816.7)=12 (m)$

5 0

4 years ago

Tamara exerts a force downward on a chair by sitting on it. Which of the following statements best explains why the chair does n

ValentinkaMS [17]

I think the answer is A

6 0

4 years ago

If 2 people are on a bed and they are the same weight, and 1 of them gets off and the bed breaks who is responsible? Is it the p

alekssr [168]

Answer:

I would say the one who got up bc if he or she wouldn't have gotten up the bed wouldn't have broke

6 0

3 years ago