Download The graph below shows the force Fx acting on an object with a mass

The graph below shows the force Fx acting on an object with a mass of 2 kg. As shown in the graph, the force
acts on the object over a displacement of 15 m.
1) Using complete sentences, describe the force over the 15 m that it is applied to the object.
2) Calculate/determine the total work the force does on the object over the 15 m displacement. ESS
3) If the object is initially at rest, calculate/determine the 2-kg object’s change in kinetic energy (K). ESS or
explain your answer using complete senctences.
4) Calculate the 2-kg object’s final speed (vf). ESS
In the diagram below, the ball has a mass of 2 kg, and the slide/ramp is frictionless.
1) At which point, B or C, will the ball have a greater speed. Justify your answer using energy concepts and
complete sentences.
2) Calculate the maximum energy for this system using energy principles. ESS
3) Using energy principles, calculate the speed of the ball at point C. ESS
A 5-kg mass on a frictionless surface is pressed against a spring “launcher", as shown below. The spring
constant (k) of the spring is 5 N/m.
1) If the spring is compressed 0.20 m, calculate the energy stored in the spring. ESS
2) Using energy principles, calculate the final speed of the 5-kg object after it is “launched” horizontally along
the frictionless surface? ESS
In the diagram below, a 0.020-kg grasshopper hops off the ground with an initial velocity of 6 m/s.
1) Using energy principles, calculate the maximum height (ymax) of the grasshopper during the hop. ESS
2) Calculate the amount of work gravity does on the grasshopper over the vertical displacement from the zero
level to the maximum height (ymax). ESS
In the diagram below, an icefisherperson hauls her catch a distance of 30 m to shore by applying a 20-N force
to a rope. The rope makes an angle of 25o to the horizontal.
1) Calculate the amount of work done by the icefisherperson on the sled. ESS
2) If the sled moves at a constant speed, calculate the amount of work done by friction on the sled. ESS
3) If the sled moves at a constant speed, calculate the amount of work done on the sled by gravity. ESS