Chapter 7 Acceleration

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Last updated 6:09 PM on 4/19/26
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10 Terms

1
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Define Acceleration

Acceleration is the rate of change of velocity with respect to time

Unit: m s-2

2
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Formula for Average Acceleration

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3
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Derive the formula v=u+at

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4
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Derive the formula s=ut+1/2 at2

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5
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Derive the formula v2 = u2 + 2as

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6
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What is the area under a velocity time graph?

The area under a velocity time graph is the distance travelled

7
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Measurement of Acceleration due to Gravity (g) using freefall method

Set up as shown

Measure the distance s from the bottom of the ball bearing to the top of the trapdoor

Flick the switch and record the time

repeat for different values of s

draw a graph of s over t2

gravity g will be 2(slope)

<p>Set up as shown</p><p>Measure the distance s from the bottom of the ball bearing to the top of the trapdoor</p><p>Flick the switch and record the time</p><p>repeat for different values of s</p><p>draw a graph of s over t<sup>2</sup></p><p>gravity g will be 2(slope)</p>
8
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Graph for Freefall Experiment

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9
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Describe how the time interval t was measured

Electronic timer starts when the switch is flipped and ball drops

Timer stops when the ball hits the trapdoor

10
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Why is a smooth metal sphere used?

  • To reduce air resistance

  • High density

  • Magnetic