Lab: Kinetic Energy

Question 1

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

Revolt · Accepted Answer

[Image: K times E = one half m v squared....]

Question 2

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.

Revolt · Accepted Answer

✔ mass; In Part I, the independent variable was .: mass; In Part II, the independent variable changed to .: speed; The dependent variable for both Part I and Part II was .: kinetic energy

Question 3

timekinetic energy✔ speedmass

Revolt · Accepted Answer

✔ speed

Question 4

time✔ kinetic energyspeedmass

Revolt · Accepted Answer

✔ kinetic energy

Question 5

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.

Revolt · Accepted Answer

✔ 10 times more; A 1,000 kg ball traveling at 5 m/s would have kinetic energy.: 10 times more; A 10 kg ball traveling at 5 m/s would have kinetic energy.: 10 times less; A 100 kg person falling at 5 m/s would have kinetic energy.: the same

Question 6

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

Revolt · Accepted Answer

✔ 10 times less

Question 7

✔ the same10 times more10 times less100 times more100 times less

Revolt · Accepted Answer

✔ the same

Question 8

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.

Revolt · Accepted Answer

A 50 kg ball traveling at 20 m/s would have kinetic energy.: 4 times more; A 50 kg ball traveling at 5 m/s would have kinetic energy.: 4 times less; A 50 kg person falling at 10 m/s would have kinetic energy.: the same

Question 9

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

Revolt · Accepted Answer

✔ 4 times less

Question 10

✔ the same2 times more2 times less4 times more4 times less

Revolt · Accepted Answer

✔ the same

Lab: Kinetic Energy Answers

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