SELECT * FROM question_mgmt as q WHERE id=4140 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=8 AND subId=16 AND chapterId=189 and ex_no='3' AND status=1 ORDER BY CAST(question_no AS UNSIGNED)
An automobile vehicle has a mass of 1500 kg. What must be the force between the vehicle and road if the vehicle is to be stopped with a negative acceleration of 1.7 m s-2?
Mass of the automobile vehicle, m = 1500 kg
Acceleration of the automobile, a = −1.7 ms−2
We know that
Force = Mass × Acceleration = 1500 × (−1.7) = −2550 N
The negative sign shows that force is in the opposite direction of motion, the force between the automobile and the road is −2550 N.
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