Projectile Motion Equations Quiz

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What is the only force acting on a cannonball in projectile motion?

Air resistance

Friction

Gravity (correct)

Magnetic force

Which direction does a cannonball move in projectile motion?

Sideways only

Only upwards

Only downwards

Both upwards and sideways (correct)

What is the value of acceleration due to gravity on Earth in meters per second squared?

9.8

-9.8 (correct)

-10.2

10.2

Which set of equations govern 2D projectile motion?

y = vi * t + ½ a * t^2 and y = vf * t + ½ a * t^2 Signup and view all the answers

What is the equation that represents the velocity of the cannonball in the x-direction?

vx = x / t Signup and view all the answers

What is the first step recommended to calculate where to place the target on the floor?

Measure the speed of the marble moving across the horizontal part of the table. Signup and view all the answers

What happens to the velocity of a cannonball in the x-direction once it is launched?

It remains constant Signup and view all the answers

In the lab setup described, what does the center of the target on the floor represent?

A grade Signup and view all the answers

Why does a cannonball experience an acceleration in the y-direction during projectile motion?

Due to gravity Signup and view all the answers

What does a negative acceleration value signify in this context?

Marble is moving downward Signup and view all the answers

What is critical to reduce in order to minimize the marble drifting sideways?

Time measurements accuracy Signup and view all the answers

What is the significance of measuring the distance using a ruler or tape measure in the lab solution?

Calculating velocity in the x-direction Signup and view all the answers

Which step involves calculating the time of flight from the edge of the table to the floor?

Step 4 Signup and view all the answers

What causes a marble to receive a 'C grade' in this lab setup?

'Y' variable being off Signup and view all the answers

What should you do if your marble fails to hit the target even after following all previous steps correctly?

Change height of the table by adding books underneath each leg Signup and view all the answers

What should you do if your marble starts to drift sideways during the lab experiment?

Build the ramp in a way that reduces sideways drift Signup and view all the answers

Why is it important to measure the speed of the marble moving across the table?

To find the velocity in the x-direction Signup and view all the answers

In the lab setup described, what happens when the marble leaves the table?

It starts moving directly horizontally Signup and view all the answers

What is the main source of error in this lab experiment?

Using a stopwatch for timing Signup and view all the answers

Which step in the lab solution involves calculating the displacement in the x-direction?

Step 5: Solve for x using time and velocity Signup and view all the answers

What does a value of -9.8 for acceleration signify in this experiment?

The marble is falling under gravity Signup and view all the answers

Why must you let go of your marble once it reaches the calculated position for the target?

To check for possible sideways drift Signup and view all the answers

What is crucial about measuring the distance from the edge of the table across the floor?

It assists in positioning the target accurately Signup and view all the answers

What is the main force acting on a cannonball during projectile motion?

Gravitational force Signup and view all the answers

Which direction does a cannonball move initially after being launched in projectile motion?

Upward Signup and view all the answers

What is the significance of setting up a sturdy ramp during the physics lab experiment?

To provide an inclined surface for the marble to roll down Signup and view all the answers

Which set of equations governs 2D projectile motion according to the text?

$vf = vi + a * t$, $y = vi * t + ½ a * t^2$, $y = vf * t + ½ a * t^2$ Signup and view all the answers

Why does the cannonball experience a constant velocity in the x-direction once launched in projectile motion?

Because there are no forces acting horizontally Signup and view all the answers

What role does gravity play in causing acceleration during projectile motion?

Gravity causes acceleration only in the downward direction Signup and view all the answers

How do the kinematics equations of constant acceleration apply to projectile motion?

They provide a framework to analyze changes in velocity over time Signup and view all the answers