7. (a) Abel is driving on the highway. Foolishly, he is speeding; he's going 40 m/s...

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7. (a) Abel is driving on the highway. Foolishly, he is speeding; he's going 40 m/s on a stretch where the speed limit is 30 m/s. He sees a police officer parked 200 m ahead of him. What must his acceleration be so that he's going the speed limit as he passes the officer? (b) As it turns out, the officer saw Abel coming when he was 200 m away. It will take the officer 6.5s to get his radar gun and accurately read Abel's speed. If he is accelerating with the value found in the previous part, will Abel be moving at the speed limit before this time? Justify your answer with a calculation. 7. (a) Abel is driving on the highway. Foolishly, he is speeding; he's going 40 m/s on a stretch where the speed limit is 30 m/s. He sees a police officer parked 200 m ahead of him. What must his acceleration be so that he's going the speed limit as he passes the officer? (b) As it turns out, the officer saw Abel coming when he was 200 m away. It will take the officer 6.5s to get his radar gun and accurately read Abel's speed. If he is accelerating with the value found in the previous part, will Abel be moving at the speed limit before this time? Justify your answer with a calculation.

Answer rating: 100% (QA)

a To determine Abels required acceleration to reach the speed limit as he passes the officer we need ... View the full answer