If your weight is force created by gravity on your body, and therefore is the Earth pulling you down, what is the reaction force
1 answer:
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Answer:
3302 meters!
Explanation:
Wow!
The acceleration due to the stopping force of the brakes is given by Force/mass = 1000/3568 =.28m/s^-2
We will apply the equations of motion to calculate the braking distance.
; where V is the final velocity, U is the initial velocity, a is the acceleration and s is the displacement.
0=43^2-2(0.28)*s
Solve for s.
Answer:
(a) 2.542 cm
(b) 272.7°C
Explanation:
diameter, d = 2.540 cm
T1 = 20°C
α = 11 x 10^-6 /°C
(a) Let d' be the diameter.
T2 = 87°C
Use he formula for the areal expansion
A' = A ( 1 + βΔT)
where, β is the coefficient of areal expansion and ΔT is teh rise in temperature, A' be the area at high temperature and A be the area at low temperature.
β = 2 α = 2 x 11 x 106-6 = 22 x 10^-6 /°C
So,
D'^2 = 2.54^2 ( 1 + 22 x 10^-6 x 67)
D' = 2.542 cm
(b) Let the change in temperature is ΔT.
Use the formula for the volumetric expansion
ΔV = V x γ x ΔT
Where, γ = 3 x α = 3 x 11 x 10^-6 = 33 x 10^-6 /°C
0.9/100 = 33 x 10^-6 x ΔT
ΔT = 272.7°C