Penn Foster Students: Light can pass through Object B faster than it can pass through Object A
Answer:
A: i cant show the graph i did
B: The biker would have gone 3.6 km in 12 minuets
Explanation:
Answer:
The answer to your question is 6 km/s
Explanation:
Acceleration is a change in velocity with respect to time, its units are m/s² or km/h².
Data
vo = 15 km/h
vf = 45 km/h
t = 5 s
Formula
Substitution
a = (45 - 15) / 5
a = 30 / 5
a = 6 km/s
Answer:
81.6 m
Explanation:
Answer: 81.6 m.
The time it takes gravity to slow 40 m/s to zero when it teaches maximum height is
-v(initial) / -g = t
-40 m/s / -9.8 m/s^2 = 4.08 s
The height reached is the average velocity times this time 4.08 s, with v(avg) = [v(initial) + v(final)] / 2 with v(final) = 0. v(avg) = v(initial) / 2 = 40 m/s / 2 = 20 m/s.
So the distance d of maximum height is
d = v(avg)•t
d = 20 m/s • 4.08 s = 81.6 m.