4. A plane traveling at 200 m/s drops supplies from 1500 m above the ground. If it reaches
1 answer:
Answer:
3500 m
Explanation:
To find the horizontal displacement of the box of supplies, we just need to analyze its horizontal motion.
The horizontal motion of the box is a uniform motion with constant velocity, since there are no forces acting along this direction. Therefore, the horizontal displacement is given by
where
is the horizontal velocity
t is the time
The horizontal velocity of the supplies is the same as the plane, therefore
So, since the time of flight is
t = 17.5 s
The horizontal displacement is
You might be interested in
Answer:
-0.045 N, they will attract each other
Explanation:
The strength of the electrostatic force exerted on a charge is given by
where
q is the magnitude of the charge
E is the electric field magnitude
In this problem,
(negative because inward)
So the strength of the electrostatic force is
Moreover, the charge will be attracted towards the source of the electric field. In fact, the text says that the electric field points inward: this means that the source charge is negative, so the other charge (which is positive) is attracted towards it.