F(of spring)=230x=ma=3.5(5)=17.5=230x; x=0.07m.
The time the package travels horizontally is equal to the time it takes to hit the ground. This can be calculated using:
s = ut + 1/2 at²; u is 0
480 = 4.9t²
t = 9.90 seconds
Horizontal distance = horizontal speed x time
The speed will be converted to m/s from km/h
= 180 km/hr x 1000m/km x 1hr/3600 seconds x 9.90 seconds
= 495 m
the friction forces are smaller than the forward force
Answer:
see explanation
Explanation:
by my calculations, i believe it may be because they have to pretend to be in space.
