Acceleration
A. Acceleration 1. Acceleration When a particle’s velocity changes, the particle is said to undergo acceleration (or to accelerate). For motion along an axis, the average acceleration aavg over a time interval ( Delta t ) is ( {{a}_{avg}}=frac{{{v}_{2}}-{{v}_{1}}}{{{t}_{2}}-{{t}_{1}}}=frac{Delta v}{Delta t} ) Where the particle has velocity v1 at time t1 and then velocity v2…
Instantaneous Velocity and Speed
A. Instantaneous Velocity and Speed 1. Instantaneous Velocity and Speed You have now seen two ways to describe how fast something moves: average velocity and average speed, both of which are measured over a time interval ( Delta t ). However, the phrase “how fast” more commonly refers to how fast a particle is moving…
Position, displacement, and average velocity – Problems and solutions
Position, displacement, and average velocity – Problems and solutions Example 1. You drive a beat-up pickup truck along a straight road for 8.4 km at 70 km/h, at which point the truck runs out of gasoline and stops. Over the next 30 min, you walk another 2.0 km farther along the road to a gasoline…
Position, displacement, and average velocity
Position, displacement, and average velocity 1. What is Physics? One purpose of physics is to study motion of objects – how fast they move, for example, and how far they move in a given amount of time. NASCAR engineers are fanatical about this aspect of physics as they determine the performance of their cars before…