Lab: Kinetic Energy Answers

Read through the scenarios below and calculate the predicted change in kinetic energy of the object compared to a50 kg ball traveling at 10 m/s.

Throughout the reflection, make sure you have a copy of the Student Guide and your data tables. Use the drop-down menus to complete the statements.

timekinetic energy✔ speedmass

time✔ kinetic energyspeedmass

Which is the correct equation for calculating the kinetic energy of an object?

The concept of energy can be calculated in multiple ways. Which units are used for energy? Check all that apply.jouleskilogram meters2/seconds2newtonskilojoulesmeters/seconds2

Read through the scenarios below and calculate the predicted change in kinetic energy of the object compared to a 100 kg ball traveling at 5 m/s.

the same10 times more✔ 10 times less100 times more100 times less

✔ the same10 times more10 times less100 times more100 times less

Read through the scenarios below and calculate the predicted change in kinetic energy of the object compared to a50 kg ball traveling at 10 m/s.

the same2 times more2 times less4 times more✔ 4 times less

✔ the same2 times more2 times less4 times more4 times less

Which graph best represents the relationship between KE and mass?

Which graph best represents the relationship between KE and speed?

Which factors could be potential sources of error in the experiment? Check all that apply.energy lost in the lever due to frictioncolor of the soda bottle used in the experimentvisual estimation of height of the beanbagtemperature of the lab at the time of the experimentposition of the fulcrum for the lever affecting transfer of energy

If you repeated this experiment, which options could lead to more precise results? Check all that apply.Increase the drop heights from the top of a building, using the same lever.Use a video camera to record the height of each beanbag with greater accuracy.Use a pressure sensor to record the force of the soda bottle more accurately.Increase the number of trials for each experiment by a factor of three.Increase efficiency by examining mass and speed at the same time in the same trial.Throw the bottle at the lever as hard as you can, instead of dropping it, to create maximum KE.