Answer:
2 m/s
Explanation:
The total time = 1 hour
The vertical displacement = 1 - 1
Vertical displacement = 0
Horizontal displacement = 4 - 2
Horizontal displacement = 2
Total displacement = sqrt (2^2 - 0^2)
Displacement - 2
Average velocity is displacement/time
= 2x1
= 2 m/s
The average velocity is 2 metres per second.
Answer:
110 N
Explanation:
Net force equals mass times acceleration:
F = ma
F = (79 kg) (1.4 m/s²)
F = 110.6 N
Rounding to two significant figures, the net force is 110 N.
Answer:
They must have about 166 randomly 60 watt light bulbs to achieve the result
N = 166
Explanation:
σ = 30
% 99 = 2.576
Using the standard equation of statistics knowing the difference between the measurement have a margin error no larger than 6 can solve
σ = √∑ ( x - z' )² / N
Solve to N
N = ( % * σ / Δ x ) ²
N = ( 2.576 * 30 / 6 )²
N = 12.88 ²
N = 165. 89 44 ≅ 166
It weighs it down like everything else
