Click the tab “motion.” Check the boxes next to and “force, values, masses, speed.” Click the pause button. Place a box on the skateboard. Type 200 in the box next to the word Newtons. See below. Press the play button. Count to ten, what happens? ( look at the speedometer) Repeat steps 4 and 5 with the refrigerator. (look at the speedometer) Click the button. “Reset All” Repeat steps 2-4 using different objects and different applied forces. You can also use people. What happens to the speed? Does it slow down as different objects are added and the applied force is different? What is your as to why this happens? Remember what is!!!!!!!!!!! reasoning INERTIA How much time does it take for 1 crate, 2 crates, a refrigerator, the man, the girl, and the mystery object, with the same applied force get to maximum speed? Maximum speed is reached when the hand on the speedometer cannot go any further. (Record your evidence in the table below.) For the next part, you will need a timer. You may use a handheld stopwatch/phone, OR, for an online timer, open a new browser (Command N) and or type in this url address: google ”online stopwatch,” Complete the table. Fill in the missing values. Object Mass Applied Force Time (Use Stopwatch) (Newtons) 1. Crate 300N 2. Crates 300N Refrigerator 300N 3. 4. Man 300N 5. Girl 300N 6. Mystery Object 300N Do you think the how long it will take for that object to reach maximum speed object’s mass determines with an applied force of 300N? Make a claim, provide your evidence, and explain your reasoning. What approximate mass do you think the mystery box has based on how long it took to reach maximum speed at 3ooN? Part III Friction – Click the tab “Friction.”
Click the tab “motion.” Check the boxes next to “force, values, masses, and speed.” Click the pause button. Place a box on the skateboard. Type 200 in the box next to the word Newtons. See below. Press the play button. Count to ten, what happens? ( look at the speedometer) Repeat steps 4 and 5 with the refrigerator. (look at the speedometer) Click the “Reset All” button. Repeat steps 2-4 using different objects and different applied forces. You can also use people. What happens to the speed? Does it slow down as different objects are added and the applied force is different? What is your reasoning as to why this happens? Remember what INERTIA is!!!!!!!!!!! How much time does it take for 1 crate, 2 crates, a refrigerator, the man, the girl, and the mystery object, with the same applied force get to maximum speed? Maximum speed is reached when the hand on the speedometer cannot go any further. (Record your evidence in the table below.) For the next part, you will need a timer. You may use a handheld stopwatch/phone, OR, for an online timer, open a new browser (Command N) and google ”online stopwatch,” or type in this url address: Complete the table. Fill in the missing values. Object Mass Applied Force (Newtons) Time (Use Stopwatch) 1. Crate 300N 2. Crates 300N 3. Refrigerator 300N 4. Man 300N 5. Girl 300N 6. Mystery Object 300N Do you think the object’s mass determines how long it will take for that object to reach maximum speed with an applied force of 300N? Make a claim, provide your evidence, and explain your reasoning. What approximate mass do you think the mystery box has based on how long it took to reach maximum speed at 3ooN? Part III – Friction Click the tab “Friction.”