An amount of space beteeen 2 things or people
Answer:
45 s
Explanation:
To find the time it takes to stop, we first find the deceleration, a of the car from
v² = u² + 2as and a = (v² - u²)/2s were v = final velocity of car = 0 mph = 0 m/s, u = initial velocity of car = 30 mph = 30 × 1609.34 ft ÷ 3600 s = 13.41 ft/s and s = distance = 300 ft. Substituting the values into a, we ave
a = (v² - u²)/2s = (0² - 13.41²)/2×300 = -0.3 ft/s²
We then find the time for this deceleration from v = u + at ⇒ t = (v - u)/a
t = (v - u)/a = (0 - 13.41 ft/s)/-0.3 ft/s² = - 13.41 ft/s/-0.3 ft/s² = 44.7 s ≅ 45 s
So it takes 45 seconds to stop.
Frictional Force is the answer..
Hope it helps
Answer:
d. the translucence of the object
Explanation:
the reason is that an object has a particular color as it is translucent to certain colors; it may absorb some colors and not show them at all, or they will reflect the remaining colors, the ones we are able to see. for eg: imagine you have a red dress. you see it as red, yet it is only reflecting the red color into your eyes, and is absorbing every other color in that light's color spectrum.
Simplicity of conducting the study is to archival research; as ability to test large numbers participants is to survey.