Velocity-Time Graphs (Leaving Cert Physics): Flashcards

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Velocity-Time Graphs
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Slope of v-t graph represents

Acceleration

Formula: acceleration from v-t graph slope

v2−v1t2−t1\frac{v_2 - v_1}{t_2 - t_1}

Positive slope on v-t graph indicates

Speeding up (positive acceleration)

Negative slope on v-t graph indicates

Slowing down (deceleration)

Horizontal line on v-t graph means

Zero acceleration (constant velocity)

Area under v-t graph represents

Distance travelled

Triangle area for v-t graph distance

12\frac{1}{2} × base × height

Trapezium area for v-t graph distance

12\frac{1}{2} × (sum parallel sides) × height

Horizontal line above zero on v-t graph

Constant positive velocity

Horizontal line at zero on v-t graph

Stationary (at rest)

Curved line on v-t graph indicates

Changing acceleration (non-uniform)

Steep positive slope on v-t graph means

Large acceleration

Y-axis units on v-t graph

ms−1m s^{-1} (metres per second)

X-axis units on v-t graph

s (seconds)

Equipment for experimental v-t graph measurement

Data loggers and motion sensors

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