Nerd-A-Pult - Measuring Initial Velocity

The video tutorial explains how to measure and calculate the initial velocity of a ball launched from a device called the Nerdipult. It covers measuring the launch arm, setting up a right triangle, calculating angles using trigonometry, and determining the initial speed through frame-by-frame analysis. The tutorial concludes with a correction on significant figures.

What was the initial velocity given in the previous problem?

• 3.25 meters per second at 61.7 degrees

• 2.5 meters per second at 30 degrees

• 4.5 meters per second at 45 degrees

• 5.0 meters per second at 60 degrees

What is the length of the launch arm measured in the video?

• 20.5 centimeters

• 25.5 centimeters

• 30.5 centimeters

• 35.5 centimeters

How is the vertical side of the triangle calculated?

• By dividing the highest point by the lowest point

• By adding the lowest and highest points

• By subtracting the lowest point from the highest point

• By multiplying the lowest point by the highest point

What is the value of angle Phi calculated in the video?

• 61.7 degrees

• 90 degrees

• 28.327 degrees

• 45 degrees

What is the relationship between the angle Theta and the initial launch angle?

• Theta is unrelated to the initial launch angle

• Theta is twice the initial launch angle

• Theta is half the initial launch angle

• Theta is equal to the initial launch angle

How many frames per second were used to film the launches?

• 240 frames per second

• 120 frames per second

• 360 frames per second

• 480 frames per second

What was the average distance the ball traveled in the first frame?

• 1.5 centimeters

• 1.4 centimeters

• 1.3 centimeters

• 1.2 centimeters