It takes 1900 J of work to stretch a spring from its natural length of 1 m to a length of 4 m. Find the force constant of the spring.

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(Do not write anything inside the small box. Write your answers on a paper, scan and upload.) When a particle is located a distance z meter from the origin, a force of f(x) = 3x² + 4x-newtons acts on it. How much work (in Jules) is done in moving it from z = 3 meter to z = 7 meter?

A small boat is crossing a lake on a windy day. During some interval of time, the boat undergoes the given displacement A7. AF = (3.21 m)i + (2.63 m)ĵ During the same interval of time, the wind exerts the given constant force on the boat. F = (269 N)-(131 N)Ĵ What is the total work done on the boat by the wind over this period of time? © Macmillan Learning. work: What is the angle between the direction of the wind force and the direction of the boat's motion during this time interval? angle:

The distance that a spring will stretch varies directly as the force applied to the spring. A force of 12 pounds is needed to stretch a spring 9 inches. What force is required to stretch the spring 15 inches?

A force of 300 newtons accelerates an object at 5 meters per second squared. In order to increase the object's acceleration to 8 meters per second squared, how much force is required? O 37.5 newtons O 187.5 newtons O 480 newtons O 900 newtons

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