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Excel in math and science
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1D Kinematics
Excel in math and science
Master concepts by solving fun, challenging problems.
It's hard to learn from lectures and videos
Learn more effectively through short, conceptual quizzes.
Our wiki is made for math and science
Master advanced concepts through explanations,
examples, and problems from the community.
Used and loved by 4 million people
Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.
Concept Quizzes
An object is thrown straight down with an initial speed of \(5\text{ m/s}\) from a bridge. If the atmosphere is completely free of air resistance, how fast will the stone be when it enters the water \(0.5\) seconds later?
The gravitational acceleration is \(g=10\text{ m/s}^2.\)
Excel in math and science
Master concepts by solving fun, challenging problems.
It's hard to learn from lectures and videos
Learn more effectively through short, conceptual quizzes.
Our wiki is made for math and science
Master advanced concepts through explanations,
examples, and problems from the community.
Used and loved by 4 million people
Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.
An object is thrown straight upward with an initial speed of \(31\text{ m/s}.\) If the atmosphere is completely free of air resistance, what is its velocity after \(4\) seconds has passed?
Define upward as positive direction.
The gravitational acceleration is \(g=10\text{ m/s}^2.\)
Excel in math and science
Master concepts by solving fun, challenging problems.
It's hard to learn from lectures and videos
Learn more effectively through short, conceptual quizzes.
Our wiki is made for math and science
Master advanced concepts through explanations,
examples, and problems from the community.
Used and loved by 4 million people
Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.
A bullet is being fired from a pistol. As the bullet is fired, it initially accelerates uniformly at \(1000\text{ m/s}^2\) for \(0.15\) seconds. After \(0.15\) seconds has passed and the bullet has escaped from the pistol, it constantly decelerates at a rate of \(1\text{ m/s}^2\) due to air resistance. What is the speed of the bullet \(4.15\) seconds after the trigger is pulled?
Ignore the effect of gravity.
Excel in math and science
Master concepts by solving fun, challenging problems.
It's hard to learn from lectures and videos
Learn more effectively through short, conceptual quizzes.
Our wiki is made for math and science
Master advanced concepts through explanations,
examples, and problems from the community.
Used and loved by 4 million people
Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.
An object is falling with a speed of \(3\text{ m/s}.\) If the atmosphere is free of air resistance, how fast will the object be falling \(3\) seconds later?
The gravitational acceleration is \(g=10\text{ m/s}^2.\)
Excel in math and science
Master concepts by solving fun, challenging problems.
It's hard to learn from lectures and videos
Learn more effectively through short, conceptual quizzes.
Our wiki is made for math and science
Master advanced concepts through explanations,
examples, and problems from the community.
Used and loved by 4 million people
Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.
A car that is initially traveling at \(19\text{ m/s}\) accelerates uniformly for \(5.0\) seconds at a rate of \(4.0\text{ m/s}^2,\) in a straight line. What is the car's velocity after the \(5.0\) seconds?