The horizontal is s or displacement
The vertical is t or time
Answer:
Explanation:
Velocity at the bottom of height h
= √2gh
deceleration on rough horizontal surface
= μg , μ is coefficient of friction
= .27 x 9.8
= 2.646 m / s²
v² = u² - 2as
0 = 2gh - 2 x 2.646 x 19
h = 2 x 2.646 x 19 / 2 x 9.8
= 5.13 m
the answer is c: kilogram
explanation: The standard International System of Units (SI) unit of mass is the kilogram (kg). The kilogram is 1000 grams (g), first defined in 1795 as one cubic decimeter of water at the melting point of ice.
Answer:
Your answer would be C <u><em>Hope this helps</em></u>
Answer:
v₁ = 3.5 m/s
v₂ = 6.4 m/s
Explanation:
We have the following data:
m₁ = mass of trailing car = 400 kg
m₂ = mass of leading car = 400 kg
u₁ = initial speed of trailing car = 6.4 m/s
u₂ = initial speed of leading car = 3.5 m/s
v₁ = final speed of trailing car = ?
v₂ = final speed of leading car = ?
The final speed of the leading car is given by the following formula:
![v_2=\frac{2m_1}{m_1+m_2}u_1-\frac{m_1-m_2}{m_1+m_2}u_2\\\\v_2=\frac{(2)(400\ kg)}{400\ kg+400\ kg}(6.4\ m/s)-\frac{400\ kg-400\ kg}{400\ kg + 400\ kg}(3.5\ m/s)](https://tex.z-dn.net/?f=v_2%3D%5Cfrac%7B2m_1%7D%7Bm_1%2Bm_2%7Du_1-%5Cfrac%7Bm_1-m_2%7D%7Bm_1%2Bm_2%7Du_2%5C%5C%5C%5Cv_2%3D%5Cfrac%7B%282%29%28400%5C%20kg%29%7D%7B400%5C%20kg%2B400%5C%20kg%7D%286.4%5C%20m%2Fs%29-%5Cfrac%7B400%5C%20kg-400%5C%20kg%7D%7B400%5C%20kg%20%2B%20400%5C%20kg%7D%283.5%5C%20m%2Fs%29)
<u>v₂ = 6.4 m/s</u>
The final speed of the leading car is given by the following formula:
![v_1=\frac{m_1-m_2}{m_1+m_2}u_1+\frac{2m_2}{m_1+m_2}u_2\\\\v_1=\frac{400\ kg-400\ kg}{400\ kg + 400\ kg}(6.4\ m/s)+\frac{(2)(400\ kg)}{400\ kg+400\ kg}(3.5\ m/s)](https://tex.z-dn.net/?f=v_1%3D%5Cfrac%7Bm_1-m_2%7D%7Bm_1%2Bm_2%7Du_1%2B%5Cfrac%7B2m_2%7D%7Bm_1%2Bm_2%7Du_2%5C%5C%5C%5Cv_1%3D%5Cfrac%7B400%5C%20kg-400%5C%20kg%7D%7B400%5C%20kg%20%2B%20400%5C%20kg%7D%286.4%5C%20m%2Fs%29%2B%5Cfrac%7B%282%29%28400%5C%20kg%29%7D%7B400%5C%20kg%2B400%5C%20kg%7D%283.5%5C%20m%2Fs%29)
<u>v₁ = 3.5 m/s</u>