Embedded Files
Sample Problem: Based upon: Physics Classroom Kinematic Problem Solving
Ima Hurryin is approaching a stoplight moving with a velocity of +30.0 m/s. The light turns yellow, and Ima applies the brakes and skids to a stop. If Ima's acceleration is -8.00 m/s2, then determine the displacement of the car during the skidding process.
Annotated Sketch
Variables ID'd
Coordinates ID'd
2. Sketch of v-t Graph:
3. Variable ID
Knowns / Unknowns
Unit Conversions (mks system)
4. Choose appropriate Equation based on info
5. Substitute and Solve - PLAY THE GAME!!! (Thanks to Mr. Wing)
6. Check for reasonableness of answer:
Ben Rushin is waiting at a stoplight. When it finally turns green, Ben accelerated from rest at a rate of a 6.00 m/s2 for a time of 4.10 seconds. Determine the displacement of Ben's car during this time period.
Exponentially More Difficult Sample
Exponentially More Difficult Sample
Choose your values:
Using sum of the days you were born (i.e. 10 March, 11 May, and 04 August you would choose a 25 meter cliff (10+11+04) and an initial velocity of 16 m/s (03+05+08).
From a (sum of days)-meter cliff, Jasmine throws three aerodynamically perfect balls (no air resistance). Ball A is thrown upwards at (sum of months) m/s, Ball B is thrown downwards at (sum of months) m/s and Ball C is simply dropped from the height of (sum of days)-m.
Sketch the velocity time graph for each of the three balls. Indicate important aspects of each line (points, slope/gradient, and area under the curve)
Determine and rank the final velocity of the three balls upon impact with the ground.
Determine and rank the time of the three balls from release to impact with the ground.
Rohit's sister has argued that the AP curriculum should be more realistic and include air resistance into their problems. For one of the three balls that was thrown, sketch a graph of the velocity v. time for a ball that experiences air resistance.
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