The nature of acceleration is determined by the net external force for constant mass system. Depending on the nature of force, there exists wide range of possibilities like zero, constant or varying accelerations in one dimensional motion.
Motion in two dimensions with one dimensional acceleration (projectile) is analyzed with component motions in coordinate system, whereas motion in two dimensions with two dimensional acceleration (circular motion) is analyzed with the help of component accelerations - tangential and normal accelerations.
A car propelled by the reaction between lemon juice and baking soda has more in common with rockets and jet aircraft than one might think. In this video segment adapted from ZOOM, two cast members demonstrate the power of rocket-propelled vehicles and how to exploit the force produced by the carbon dioxide gas. Grades 3-8.
Students construct a rocket from a balloon propelled along a guide string. They use this model to learn about Newton's three laws of motion, examining the effect of different forces on the motion of the rocket.
Subject:
Mathematics and Statistics, Science and Technology
How does an airplane stay aloft when upside down? This media-rich essay from the NOVA Web site offers an explanation based on Newton's third law of motion. Grades 6-12.
Without highly controlled jet propulsion, rockets and other aircraft would zip through the air as unpredictably as so many untied party balloons. In this video segment adapted from ZOOM, two cast members find out how slowing the amount of air expelled from a balloon and changing the direction of that air can affect the balloon's behavior. Grades 3-8
Objective questions, contained in this module with hidden solutions, help improve understanding of the topics covered under the module "Angular momentum".
In this activity, students construct their own rocket-powered boat called an "aqua-thruster." These aqua-thrusters will be made from a film canister and will use carbon dioxide gas produced from a chemical reaction between an antacid tablet and water to propel it. Students observe the effect that surface area of this simulated solid rocket fuel has on thrust.
Subject:
Mathematics and Statistics, Science and Technology
Negative vector is a relative term - not an independent concept. We completely loose the significance of a negative vector when we consider it in isolation. A negative vector assumes meaning only in relation with another vector or some reference direction.
One dimensional attributes need careful interpretation because a vector quantity, inherently different to scalar, is represented by a signed scalar (positive or negative) quantity with superimposed notions of two concepts (scalar and velocity).
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