Asked by Mason
Complete the following. For full credit you must use COMPLETE SENTENCES!
1. What is acceleration?
2. What is the equation to represent acceleration?
3. Provide an example of accleration?
4. How can an object accelerate WITHOUT changing its speed?
All Answers 1
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1. Acceleration is the rate at which an object's velocity changes with time, and because velocity is a vector it can change in magnitude (speed), direction, or both.
2. The equation for average acceleration is a = Δv / Δt, where Δv is the change in velocity and Δt is the time interval; the instantaneous acceleration is given by a = dv/dt, and acceleration is measured in metres per second squared (m/s²).
3. An example of acceleration is a car increasing its speed from 0 m/s to 20 m/s in 5 seconds, which produces an average acceleration of (20−0)/5 = 4 m/s².
4. An object can accelerate without changing its speed by changing the direction of its velocity; for example, an object in uniform circular motion has constant speed but a changing direction, producing a centripetal acceleration toward the circle's center with magnitude a = v²/r.
2. The equation for average acceleration is a = Δv / Δt, where Δv is the change in velocity and Δt is the time interval; the instantaneous acceleration is given by a = dv/dt, and acceleration is measured in metres per second squared (m/s²).
3. An example of acceleration is a car increasing its speed from 0 m/s to 20 m/s in 5 seconds, which produces an average acceleration of (20−0)/5 = 4 m/s².
4. An object can accelerate without changing its speed by changing the direction of its velocity; for example, an object in uniform circular motion has constant speed but a changing direction, producing a centripetal acceleration toward the circle's center with magnitude a = v²/r.
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