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1 | |
Who is faster: someone traveling a mile a minute or someone traveling 20 m/s? |
| | A) | The person traveling a mile a minute travels faster. |
| | B) | The person traveling 20 m/s travels faster. |
| | C) | They travel at the same speed. |
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2 | |
A bug travels 30 cm due east before turning and traveling 40 cm due north. A second bug travels 40 cm due east before turning and traveling 30 cm due north. Which statement is true? |
| | A) | Both bugs have the same vector displacement. |
| | B) | Both bugs are the same distance away from their starting points. |
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3 | |
A car travels around a circular track at constant speed. The velocity of the car is |
| | A) | zero. |
| | B) | constant but not zero. |
| | C) | not constant. |
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4 | |
A boat travels due north on a large lake. Is it possible for the boat's acceleration to point due south? |
| | A) | Yes. |
| | B) | No. |
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5 | |
While a car travels around a circular track at constant speed its |
| | A) | acceleration is zero. |
| | B) | velocity is zero. |
| | C) | both of these. |
| | D) | neither of these. |
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6 | |
If air resistance is ignored, objects fall at constant |
| | A) | velocity. |
| | B) | speed. |
| | C) | acceleration. |
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7 | |
If an object falls with constant downward acceleration, the speed of the object must |
| | A) | be constant also. |
| | B) | get smaller. |
| | C) | get bigger. |
| | D) | be zero |
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8 | |
If an object rises upward with constant downward acceleration, the speed of the object must |
| | A) | be constant also. |
| | B) | get smaller. |
| | C) | get bigger. |
| | D) | be zero. |
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9 | |
If you were to throw a softball straight upward into the air, what is its acceleration at its highest point (ignore air resistance)? |
| | A) | Zero |
| | B) | 9.8 m/s2 pointing down |
| | C) | 9.8 m/s2 pointing up |
| | D) | None of the above |
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10 | |
Suppose you hold a baseball in each hand. Just as you toss one ball upward with your left hand you let the second ball drop from rest with your right hand. If you ignore air resistance, what can you say about the acceleration of each ball? |
| | A) | The ball that was tossed upward from your left hand has a bigger acceleration. |
| | B) | The ball that was dropped from your right hand has a bigger acceleration. |
| | C) | Both balls have the same acceleration. |
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11 | |
If you drop an object (in the absence of air resistance), it will accelerate downwards at a rate of 9.8 m/s2. If you instead throw it downwards as hard as you can (again with no air resistance), its acceleration after it leaves your hand will be |
| | A) | less than 9.8 m/s2. |
| | B) | equal to 9.8 m/s2. |
| | C) | greater than 9.8 m/s2. |
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12 | |
When a falling object has reached its terminal velocity its acceleration is |
| | A) | 9.8 m/s2. |
| | B) | Zero. |
| | C) | some constant value other than the answers above. |
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13 | |
If you push a book across a tabletop with a force that exactly matches the force of friction, the book’s speed |
| | A) | increases. |
| | B) | stays the same. |
| | C) | decreases. |
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14 | |
If an object has an acceleration of zero, which of the following statements is correct? |
| | A) | The net force is zero. |
| | B) | The velocity of the object is constant. |
| | C) | Both of these. |
| | D) | Neither of these. |
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15 | |
If you drive down the road with a cup of hot coffee on your dashboard, the coffee is most likely to end up in your lap when you |
| | A) | hit the brakes. |
| | B) | hit the accelerator. |
| | C) | turn right. |
| | D) | turn left. |
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16 | |
Suppose you are an astronaut working in outer space. Floating near you are two objects: a large, very massive hammer and a small screwdriver with a small mass. Which statement is correct? |
| | A) | Because there is no gravity in outer space, if you push both objects with the same force then both will feel the same acceleration. |
| | B) | Even though there is no gravity in outer space, if you push both objects with the same force then the more massive object will feel a smaller acceleration. |
| | C) | Even though there is no gravity in outer space, if you push both objects with the same force then the more massive object will feel a larger acceleration. |
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17 | |
Suppose that you have two identical objects. The first object is brought to the moon and the second is left on the earth. Which statement is correct? |
| | A) | The mass and weight of an object on the moon are the same as they are on Earth. |
| | B) | The mass is different, but the weight stays the same. |
| | C) | The weight is different, but the mass stays the same. |
| | D) | All of these. |
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18 | |
Which is heavier: 50 Lbs or 50 N? |
| | A) | 50 Lbs is heavier. |
| | B) | 50 N is heavier. |
| | C) | They are the same weight. |
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19 | |
A famous hamburger chain has asked you to help them convert their quarter pound hamburger into metric units. Which of the following is the closest replacement? |
| | A) | A half-Newton burger |
| | B) | A one-Newton burger |
| | C) | A two-Newton burger |
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20 | |
As a ball falls near the surface of the earth, the action force is the pull of the earth’s mass on the ball. The reaction force (as used in Newton’s third law) is |
| | A) | the air resistance acting against the ball. |
| | B) | the pull of the ball’s mass on the earth. |
| | C) | nonexistent in this case. |
| | D) | none of these. |
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