Answer:
the force it exert on track is
46600N
Explanation:
The car acceleration
a = V²/R
= (18.0m/s)²/(24.0)
= 13.5m/s²
net force
F(net) = m * a
= 2000kg * 13.5m/s²
= 27000N
F(net) = F₀ - F₁
where
F₀ = upward force
F₁ = downward force
F₁ = m * g
= (2000kg) * (9.8m/s²)
= 19600N
upward force which is F₀
F₀ = F(net) + F₁
= 27000N + 19600N
= 46600N
Say what? I don’t understand
Answer:
Power = 56.25 W
Explanation:
Power = workdone/time taken
We are given;
Mass; m = 50 kg
Final velocity; v = 3 m/s
Time; t = 4 s
Workdone = ½mv² = 1/2 × 50 × 3²
W = 25 × 9
W = 225 J
Thus;
Power = 225/4
Power = 56.25 W
Answer:
B
Explanation:
You lose more calories, and are on a lower risk