Answer:
0.143 m
Explanation:
The relationship between force applied on a string and stretching of the spring is given by Hooke's law:

where
F is the force exerted on the spring
k is the spring constant of the spring
x is the stretching of the spring from its equilibrium position
In this problem, we have:
F = 20 N is the force applied on the spring
k = 140 N/m is the spring constant
Solving for x, we find how far the spring will stretch:

● Use lubricants such as oil.
● Place the load on a piece of cloth as it can ease the friction
● Place the load on a cart with wheels so it can be converted to rolling friction and can be pushed easily.
● Place the load on an inclined plane
Answer:
a. 25m
b. 25m
c. 35m
Explanation:
Given the distances walked as 15m east and 20m north:
Using Pythagoras Theorem, we calculate displacement as:

Hence, the resultant displacement is 25m
b. The distance from her start point is obtained by drawing a straight line from her final point to her initial point.
Given the distances walked as 15m east and 20m north:
Using Pythagoras Theorem, we calculate displacement as:

Hence, she is 25m away from her starting point.
c. The distance traveled is calculated by summing the total distance walked:

Hence, the total distance traveled is 35m