Answer:
k = 52.2 N / m
Explanation:
For this exercise we are going to use the conservation of mechanical energy.
Starting point. When it is 30 m high
Em₀ = K + U = ½ m v² + m g h
Final point. Right when you hit the water
= K_{e} = ½ k x²
in this case the distance the bungee is stretched is 30 m
x = h
as they indicate that there are no losses, energy is conserved
Em₀ = Em_{f}
½ m v² + m g h = ½ k h²
k =
let's calculate
k =
k = 52.2 N / m
<span>A. 59 degrees......
Hope it works</span>
Momentum in x-axis before collision: 4.5 x 1.5 = 6.75
Momentum in x-axis after collision: 1.5 x 2.1 x cos(30) + 3.2 x v x cos(30)
By the principle of conservation of momentum, these are equal:
6.75 = 2.73 + 2.77v
v = 1.45 m/s
The so-called greenhouse effect is observed only in houses painted green, and even there, only between the hours of 2PM - 4PM local time on Thursday afternoon.
Answer:
D-Driving the car faster down the road.