{{asɛmtiNe Ɔkyerɛwfo}} | Nhomakorabea | Nneɛma a ɛma wotumi yɛ ade

Follow this link to open the phet simulation that will be used in this lab.

https://phet.colorado.edu/sims/html/projectile-motion/latest/projectile-motion_en.html

once opened, click on the icon labeled "intro"

Make your settings like the image.

1. Lower the height of the launcher to 0m

2. Change the initial speed to 10m/s on the slider

3. Check the components box for both the velocity vectors and acceleration vectors section.

The question we are investigating today is: How do mass and initial velocity affect the height and time of a projectile?

Lab instructions: Change the Mass and Initial Speed to match the table (provided as a link in question 2). Use the Blue Measuring tool from the simulation to take measurements

2

Hypothesis: Write a testable answer to the above question in if/then format. 'How do mass and initial velocity affect the height and time of a projectile?'

8

Data table:
https://docs.google.com/spreadsheets/d/1YQEEsL9wPrFpcPxw-YnNO2LtBgtHGDQFWY0CFSwh3bY/edit?usp=copy
Add your completed data table.

1

What happens to the height as the initial speed increases.

Height increases

Height remains the same

Height decreases

1

What happens to the height as the mass increases.

Height increases

Height remains the same

Height decreases

1

Explain why the height changed or did not change due to manipulating the
a. object's mass and
b. initial velocity.

1

Compare the time needed to reach max height and the total time for each launch. What is true.

The time to reach max height is the same as the total time for the launch.

The time to reach max height is a quarter of the total time for the launch.

The time to reach max height is half of the total time for the launch.

1

Launch one more time and watch the vectors. What happens to the Velocity Vector (Green arrow) throughout the launch?

The arrow remained the same throughout the entire launch

The arrow increased in size as the ball traveled higher then decreased in size as the ball traveled back to the ground.

The arrow decreased in size as the ball traveled higher then increased in size as the ball traveled back to the ground.

The arrow increased in size from the beginning to the end of the flight time

The arrow decreased in size during the beginning to the end of the flight time.

1

Launch on more time and watch the vectors. What happens to the Acceleration Vector (Yellow arrow) throughout the launch?

The arrow remained the same throughout the entire launch

The arrow increased in size as the ball traveled higher then decreased in size as the ball traveled back to the ground.

The arrow decreased in size as the ball traveled higher then increased in size as the ball traveled back to the ground.

The arrow increased in size from the beginning to the end of the flight time

The arrow decreased in size during the beginning to the end of the flight time.

1

Where on the path is the projectile the fastest?

when initially launched at 0m in height

mid way through the launch in the upwards direction

mid way through the launch in the downwards direction

at the heighest point

when returning to the ground at 0m in height

The speed is the same during the entire launch

1

Is there a part on the path when velocity = 0m/s?

when initially launched at 0m in height

mid way through the launch in the upwards direction

mid way through the launch in the downwards direction

at the highest point

when returning to the ground at 0m in height

there is no time when the velocity is 0m/s

1

Is there a part on the path when acceleration = 0m/s2?

when initially launched at 0m in height

mid way through the launch in the upwards direction

mid way through the launch in the downwards direction

at the heighest point

when returning to the ground at 0m in height

there is no time when the acceleration is 0m/s2

1

Does gravity affect the projectile when it is rising?

gravity affects the projectile only at the top

gravity affects the projectile all the time

gravity affects the projectile in greater amounts as it rises

gravity affects the projectile in less amounts as it rises

1

How does gravity affect the projectile when it is rising?

gravity opposes the motion and causes the object to speed up

gravity opposes the motion and causes the object to slow down

gravity is in the direction of the motion and causes the object to speed up

gravity is in the direction of the motion and causes the object to slow down

1

Does gravity affect the projectile when it is falling?

gravity affects the projectile only at the top

gravity affects the projectile all the time

gravity affects the projectile in greater amounts as it falls

gravity affects the projectile in less amounts as it falls

1

How does gravity affect the projectile when it is falling?

gravity opposes the motion and causes the object to speed up

gravity opposes the motion and causes the object to slow down

gravity is in the direction of the motion and causes the object to speed up

gravity is in the direction of the motion and causes the object to slow down

1

A pumpkin is launched directly up and reaches a height of 10 m. How long would it take for the pumpkin to go up and down? (Hint, use the time equation)

1

A pumpkin is launched directly up and reaches a height of 10 m. How long would it take for the pumpkin to rise?

1

A pumpkin is launched directly up and reaches a height of 10 m. How long would it take for the pumpkin to fall?

1

A pumpkin is launched directly up and reaches a height of 10 m. What is the velocity just before the pumpkin hits the ground? (Hint, use the time in the previous question)

1

A pumpkin is launched directly up and reaches a height of 10 m. What is the velocity directly after the pumpkin is launched?

2

A pumpkin is launched directly up and reaches a height of 10 m. Using your previous answers, draw the scenario with labeled initial velocity, velocity at the top, final velocity, time to rise, and time to fall.

Scientific Question: How does initial velocity and mass affect the height and time of a vertical projectile?

20

Unit 4: Vertical Motion Lab

Unit 4: Vertical Motion Lab

Hypothesis: Write a testable answer to the above question in if/then format. 'How do mass and initial velocity affect the height and time of a projectile?'

Data table: https://docs.google.com/spreadsheets/d/1YQEEsL9wPrFpcPxw-YnNO2LtBgtHGDQFWY0CFSwh3bY/edit?usp=copyAdd your completed data table.

What happens to the height as the initial speed increases.

What happens to the height as the mass increases.

Explain why the height changed or did not change due to manipulating the a. object's mass andb. initial velocity.

Compare the time needed to reach max height and the total time for each launch. What is true.

Launch one more time and watch the vectors. What happens to the Velocity Vector (Green arrow) throughout the launch?

Launch on more time and watch the vectors. What happens to the Acceleration Vector (Yellow arrow) throughout the launch?

Where on the path is the projectile the fastest?

Is there a part on the path when velocity = 0m/s?

Is there a part on the path when acceleration = 0m/s2?

Does gravity affect the projectile when it is rising?

How does gravity affect the projectile when it is rising?

Does gravity affect the projectile when it is falling?

How does gravity affect the projectile when it is falling?

A pumpkin is launched directly up and reaches a height of 10 m. How long would it take for the pumpkin to go up and down? (Hint, use the time equation)

A pumpkin is launched directly up and reaches a height of 10 m. How long would it take for the pumpkin to rise?

A pumpkin is launched directly up and reaches a height of 10 m. How long would it take for the pumpkin to fall?

A pumpkin is launched directly up and reaches a height of 10 m. What is the velocity just before the pumpkin hits the ground? (Hint, use the time in the previous question)

A pumpkin is launched directly up and reaches a height of 10 m. What is the velocity directly after the pumpkin is launched?

A pumpkin is launched directly up and reaches a height of 10 m. Using your previous answers, draw the scenario with labeled initial velocity, velocity at the top, final velocity, time to rise, and time to fall.

Write a mini CER (8-15 sentences) for vertical projectiles (No need for procedure or sources of error)

Hypothesis: Write a testable answer to the above question in if/then format. 'How do mass and initial velocity affect the height and time of a projectile?'

Data table: https://docs.google.com/spreadsheets/d/1YQEEsL9wPrFpcPxw-YnNO2LtBgtHGDQFWY0CFSwh3bY/edit?usp=copyAdd your completed data table.

What happens to the height as the initial speed increases.

What happens to the height as the mass increases.

Explain why the height changed or did not change due to manipulating the a. object's mass andb. initial velocity.

Compare the time needed to reach max height and the total time for each launch. What is true.

Launch one more time and watch the vectors. What happens to the Velocity Vector (Green arrow) throughout the launch?

Launch on more time and watch the vectors. What happens to the Acceleration Vector (Yellow arrow) throughout the launch?

Where on the path is the projectile the fastest?

Is there a part on the path when velocity = 0m/s?

Is there a part on the path when acceleration = 0m/s2?

Does gravity affect the projectile when it is rising?

How does gravity affect the projectile when it is rising?

Does gravity affect the projectile when it is falling?

How does gravity affect the projectile when it is falling?

A pumpkin is launched directly up and reaches a height of 10 m. How long would it take for the pumpkin to go up and down? (Hint, use the time equation)

A pumpkin is launched directly up and reaches a height of 10 m. How long would it take for the pumpkin to rise?

A pumpkin is launched directly up and reaches a height of 10 m. How long would it take for the pumpkin to fall?

A pumpkin is launched directly up and reaches a height of 10 m. What is the velocity just before the pumpkin hits the ground? (Hint, use the time in the previous question)

A pumpkin is launched directly up and reaches a height of 10 m. What is the velocity directly after the pumpkin is launched?

A pumpkin is launched directly up and reaches a height of 10 m. Using your previous answers, draw the scenario with labeled initial velocity, velocity at the top, final velocity, time to rise, and time to fall.

Write a mini CER (8-15 sentences) for vertical projectiles (No need for procedure or sources of error)

Data table:
https://docs.google.com/spreadsheets/d/1YQEEsL9wPrFpcPxw-YnNO2LtBgtHGDQFWY0CFSwh3bY/edit?usp=copy
Add your completed data table.

Explain why the height changed or did not change due to manipulating the
a. object's mass and
b. initial velocity.

Data table:
https://docs.google.com/spreadsheets/d/1YQEEsL9wPrFpcPxw-YnNO2LtBgtHGDQFWY0CFSwh3bY/edit?usp=copy
Add your completed data table.

Explain why the height changed or did not change due to manipulating the
a. object's mass and
b. initial velocity.