Answer:
The least number of forces required to stretch a spring is one.
Explanation:
Let suppose that spring is ideal, that is, that effects from its mass can be neglected since it is insignificant in comparison with external forces. In addition, let the spring have a linear behavior, meaning that net external longitudinal force exerted on spring is directly proportional to defomation. (Hooke's Law) That is:
(1)
(2)
Where:
- Net external force, measured in newtons.
- Spring constant, measured in newtons per meter.
- Deformation of spring, measured in meters.
Hence, the least number of forces required to stretch a spring is one.
Answer:
160 ft
Explanation:
As the canon ball was shot horizontally, its initial vertical velocity is 0. The ball vertical motion is generated by the gravitational acceleration g = 32m/s2. We can calculate the time it takes for it to drop 64 ft
This is also the time it takes to travel horizontally at a constant rate of 80 ft/s if we ignore air resistance.
So the ball would land 160ft away from the wall on the ground
If a person is placed in a large, hollow, metallic sphere that is insulated to the ground and a charge is placed on sphere, the person inside will not be harmed.
Answer:
20 degrees.
Explanation:
this is my answer hope that I will help you
Answer:
216
you have to change the meters per second to meters per minute, so you multiply .12 by 60 and get 7.2, then you multiply 7.2 meters per minute by 30 minutes and get 216