Answer:
14.035087719298246 ≈ 14 hours
Explanation:
just subtract the 4000 and the 11000 from 23000 which gives you 8000. And then divide that my 570
Answer: 1333 m
the length of runway it will need is S = 
(m)
Explanation:
Answer:
20. m/s
Explanation:
Draw a free body diagram of the skier. There are three forces: normal force pushing perpendicular to the slope, weight pulling down, and friction force pushing up the slope.
Sum of the forces perpendicular to the slope:
∑F = ma
N − mg cos θ = 0
N = mg cos θ
Sum of the forces parallel to the slope:
∑F = ma
mg sin θ − Nμ = ma
Substituting:
mg sin θ − (mg cos θ) μ = ma
g (sin θ − μ cos θ) = a
Given g = 9.8 m/s², θ = 32°, and μ = 0.15:
a = (9.8 m/s²) (sin 32° − (0.15) cos 32°)
a = 3.95 m/s²
After 5.0 s, the velocity is:
v = at + v₀
v = (3.95 m/s²) (5.0 s) + (0 m/s)
v = 19.7 m/s
Rounded to two significant figures, the skier's velocity is 20. m/s.
Answer:
The momentum will quadruple
Explanation:
Original momentum
momen = mv
now increase both
momen = 2m * 2v = <u>4</u> mv <====== the momentum has quadrupled
Answer:
distance is 180 displacement is 0
Explanation:
Displacement is the distance between one point to another directly in only one direction but distance is the distance traveled altogether in any direction.
