AP Physics C: Forces Flashcards
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| 10797601619 | 2400 N | A golf club hits a golf ball with a force of 2400 N. The golf ball hits the club with a force | 0 | |
| 10797584963 | 6 m/s | Airlifted medical supplies in a box are dropped from a helicopter. The mass of the box is 2.0 kg. The face of the box closest to the ground measures 1 m x 0.75 m. The density of the air, ρ, is approximately 1.3 kg/m 3 and the drag coefficient of the box, C D is 1.1. Which of the following is the best estimate of the terminal speed of the box? | 1 | |
| 10797577887 | 6 N | The coefficient of static and kinetic frictions between a 3.0-kg box and a desk are 0.40 and 0.30, respectively. What is the net force on the box when a 15-N horizontal force is applied to the box? | 2 | |
| 10797554172 | force | - push or pull - unbalanced: cause an object to accelerate - vector | 3 | |
| 10797554173 | contact (force) | involve contact between bodies normal, friction | 4 | |
| 10797554174 | field (force) | act without necessity of contact gravity | 5 | |
| 10797554175 | equilibrium | net force on a body is zero | 6 | |
| 10797554176 | dynamic | moving equilibrium | 7 | |
| 10797554177 | static | equilibrium at rest | 8 | |
| 10797554178 | newton's first law | a body in motion stays in motion unless acted upon by an external force horizontal component of velocity | 9 | |
| 10797554179 | newton's second law | F=ma | 10 | |
| 10797554180 | inertia | resistance of an object to being accelerated | 11 | |
| 10797554181 | mass | same as inertia | 12 | |
| 10797554182 | weight | gravitational attraction | 13 | |
| 10797554183 | normal force | the force that keeps one object from invading another object | 14 | |
| 10797554184 | tension | - a pulling force - rope/string resists being pulled apart | 15 | |
| 10797554185 | friction | opposes sliding motion | 16 | |
| 10797554186 | static | friction that exists before sliding occurs | 17 | |
| 10797554187 | kinetic | friction that exists while moving | 18 | |
| 10797554188 | newton's third law | - for every action there exists an equal and opposite reaction | 19 | |
| 10797571721 | 300 N | A person on a scale rides in an elevator. If the mass of the person is 60.0 kg and the elevator accelerates downward with an acceleration of 5.0 m/s2, what is the reading on the scale? | 20 | |
| 10797614249 | 11.5 N | If the box in the picture had a mass of 2 kg. Calculate the tension of the cord. (round your degree to the nearest angle for calculations sake) |  | 21 |
| 10797710837 | 5.88 m/s2 | A 200.0-gram mass (m2) and 50.0-gram mass (m1) are connected by a string. The string is stretched over a pulley. Determine the acceleration of the masses. |  | 22 |
| 10797741721 | 294 m/s | A 60 kg jumps out of an airplane with a parachute. He decides not to pull the rip cord until he reaches terminal velocity. If the drag force is equal to F D=−bv and b=2kg/s , what is the magnitude of the velocity when he decides to pull the cord? | 23 | |
| 10797783667 | 6.53 m/s2 | Using the Atwood Machine shown, determine the acceleration of the system. |  | 24 |
| 10797839772 | 13.07 N | Using the Atwood Machine shown, determine the tension of the string. | | 25 |
| 10797865296 | 200 N | If the tension in string 2 is 4N, and the block is moving at a constant rate, what is the weight of block B. The coefficient of kinetic friction between the block and table is 0.02 |  | 26 |
| 10797974733 | 75 N | A 50-N applied force (30 degrees to the horizontal) accelerates a box across a horizontal sheet of ice. Calculate the normal force. | 27 | |
| 10798008865 | 12 m/s2 | Suppose that a sled is accelerating at a rate of 2 m/s2. If the net force is tripled and the mass is halved, then what is the new acceleration of the sled? | 28 | |
| 10798015788 | 3 m/s2 | Suppose that a sled is accelerating at a rate of 2 m/s2. If the net force is tripled and the mass is doubled, then what is the new acceleration of the sled? | 29 |