Answer:
2.5
Step-by-step explanation:
Answer:
-12
Step-by-step explanation:
6.213 as a mixed number would be 6 and 213/1000.
all you do to convert it to a mixed number is look at how many numbers are after the decimal.
since theres 3 numbers, that means it would be in the thousands place
There's no question there. You didn't attach the pic
Answer:
-24.8 m/s
Step-by-step explanation:
Given:
y₀ = 60 m
y = 40 m
v₀ = 15 m/s
a = -9.8 m/s²
Find: v
There are three constant acceleration equations we can use:
y = y₀ + v₀ t + ½ at²
v = at + v₀
v² = v₀² + 2a(y − y₀)
We aren't given the time, so we need to use the third equation, which is independent of time:
v² = v₀² + 2a(y − y₀)
Plug in the values:
v² = (15 m/s)² + 2(-9.8 m/s²) (40 m − 60 m)
v² = 617 m²/s²
v ≈ ±24.8 m/s
Since the coin is on the way down, the velocity is negative. So v = -24.8 m/s.
