## Featured Research

from universities, journals, and other organizations

# Basketball: The physics of the 3-point shot

Date:
March 21, 2014
Source:
Creighton University
Summary:
What makes the perfect 3-pointer? Well, there is the angle the player takes on the 3-point line and the arc of the ball, which is the path the basketball flies from the time it leaves the shooter's hand until it arrives at the basket. What makes the perfect 3-pointer? Well, there is the angle the player takes on the 3-point line and the arc of the ball, which is the path the basketball flies from the time it leaves the shooter's hand until it arrives at the basket.

He may not see very many basketball players in his classroom, but Creighton University physics professor Gintaras Duda, Ph.D., says they are instinctual physicists because of what it takes to make the perfect shot on the court, particularly the 3-pointer.

What makes the perfect 3-pointer? Well, there is the angle the player takes on the 3-point line and the arc of the ball, which is the path the basketball flies from the time it leaves the shooter's hand until it arrives at the basket.

According to Duda and the research he has read, the lowest arc is 33 degrees for even a hope of making a 3-point shot, but with an arc of 45 degrees, a speed of just under 20 miles per hour and two revolutions per second of spin, at 20.9 feet from the basket, the player has the makings of the perfect 3-point shot.

While some people say gravity is the only thing affecting the ball once it is in the air, Duda is not so sure.

In the book The Physics of Basketball, the author, John Fantanella, explains the Magnus effect, the backspin which gives the ball a little bit of lift allowing for the slowest possible speed and a less violent rebound if it hits the backboard or rim and may even allow the ball to go in the net.

"I've heard about it in baseball, you know the curve ball that pitchers throw to curve one way or the other over the plate, but I really didn't realize how important it is in basketball," said Duda. "On certain shots, like the free throw and the 3-pointer, you want a slower speed on the ball for that soft shot that has a better chance of landing in the basket than a faster ball with no spin."

In other words, avoiding the brick, that shot with the distinctive sound that lets you know the ball is not going in at all.

It takes practice for the player to find that perfect shot. After all, consistency equals reliability, but by finding that perfect shot, the player has found the right speed, the right angle of approach, and the perfect arc of the ball.

Creighton All-American Doug McDermott has that consistency. McDermott, who ranks among the top college scorers of all time, shot 45 percent from behind the arc. Teammate Ethan Wragge is the team's leading 3-point shooter, hitting 47.3 from 3-point.

Duda, the 2013 U.S. Professor of the Year, said he will be watching March Madness with renewed interest and understanding this weekend, and he's hoping the Bluejays get an A in physics for netting 3-point shots.

Watch here as Duda breaks down the perfect 3-pointer.

Story Source:

The above story is based on materials provided by Creighton University. Note: Materials may be edited for content and length.

Creighton University. "Basketball: The physics of the 3-point shot." ScienceDaily. ScienceDaily, 21 March 2014. <www.sciencedaily.com/releases/2014/03/140321164654.htm>.
Creighton University. (2014, March 21). Basketball: The physics of the 3-point shot. ScienceDaily. Retrieved September 2, 2014 from www.sciencedaily.com/releases/2014/03/140321164654.htm
Creighton University. "Basketball: The physics of the 3-point shot." ScienceDaily. www.sciencedaily.com/releases/2014/03/140321164654.htm (accessed September 2, 2014).

## More Science & Society News

Tuesday, September 2, 2014

### Featured Research

from universities, journals, and other organizations

### Featured Videos

from AP, Reuters, AFP, and other news services

Get on Your Bike! London Cycling Popularity Soars Despite Danger

### Get on Your Bike! London Cycling Popularity Soars Despite Danger

AFP (Sep. 1, 2014) — Wedged between buses, lorries and cars, cycling in London isn't for the faint hearted. Nevertheless the number of people choosing to bike in the British capital has doubled over the past 15 years. Duration: 02:27 Video provided by AFP
Thailand Totters Towards Waste Crisis

### Thailand Totters Towards Waste Crisis

AFP (Sep. 1, 2014) — Fears are mounting in Bangkok that poor planning and lax law enforcement are tipping Thailand towards a waste crisis. Duration: 01:21 Video provided by AFP
California Passes 'yes-Means-Yes' Campus Sexual Assault Bill

### California Passes 'yes-Means-Yes' Campus Sexual Assault Bill

Reuters - US Online Video (Aug. 30, 2014) — California lawmakers pass a bill requiring universities to adopt "affirmative consent" language in their definitions of consensual sex, part of a nationwide drive to curb sexual assault on campuses. Linda So reports. Video provided by Reuters
As Drought Continues LA "water Police" Fight Waste

### As Drought Continues LA "water Police" Fight Waste

AFP (Aug. 29, 2014) — In the midst of a historic drought, Los Angeles is increasing efforts to go after people who waste water. Five water conservation "cops" drive around the city every day educating homeowners about the drought. Duration: 02:17 Video provided by AFP

## Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):

Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

## In Other News

... from NewsDaily.com

Save/Print:
Share:

## Free Subscriptions

Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

## Get Social & Mobile

Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

## Have Feedback?

Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web