Questions 40-43 refer to a toy car which can move to the right or left along a h

Question

Questions 40-43 refer to a toy car which can move to the right or left along a horizontal line (the positive portion of the distance axis). The positi on is to the right. Choose the correct velocity-time graph (A - G) for each of the following questions. You may use a graph more than once or not at all. If you think that none is correct, answer choice J Time 0 Time Time Time None of these graphs is correct 40. Which velocity graph shows the car moving toward the right (away from the origin) at a steady (constant) velocity? Which velocity graph shows the car reversing direction? Which velocity graph shows the car moving toward the left(toward the origin) at a steady (constant) velocity? Which velocity graph shows the car increasing its speed at a steady (constant) rate? 41. 42, 43. Force and Motion

Explanation / Answer

40) The velocity is always positive and constant. Hence graph A is correct choice

41) The velocity is positive for a while and then becomes negative after the car reverses. Hence graph F is correct choice

42) The velocity is always negative and constant. Hence graph B is correct choice

43) The speed is positive and increasing. Hence graph D is the correct choice.

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