Answer:
25 N
Explanation:
Use the equation F = m(Vf–Vi) / Δt.
average force = mass (final velocity - initial velocity) / change in time
F = 40 kg(5.0 m/s) / 8.0 s = 200 / 8.0 = 25 kgm / s^2 = 25 Newtons
Answer:
Pop. variance=16
Pop. Stand. deviation =4
Explanation:
x x^2
8 64
11 121
15 225
17 289
<u>19 361</u>
70 1060
Mean 14 (70/5)
Pop.Variance 16.00 (1060/5 - (14^2)
Pop.Standard Dev. 4 (square root of 16)