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Two cars are traveling along a straight-line in the same direction, the lead car at 25.0 m/s and the other car at 36.0 m/s. At the moment the cars are 40.0 m apart, the lead driver applies the brakes, causing his car to have an acceleration of -2.30 m/s2.
(a) How much time does it take for the lead car to stop?
____ s
(b) Assuming that the chasing car brakes at the same time as the lead car, what must be the chasing car's minimum negative acceleration so as not to hit the lead car?
_____ m/s2
(c) How much time does it take for the chasing car to stop?
_____ s
A football punter accelerates a football from rest to a speed of 9 m/s during the time in which his toe is in contact with the ball, what average force does the punter exert on the ball
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You drive on Interstate 10 from San Antonio to Houston, half the time at 60 km/h and the other half at 105 km/h. On the way back you travel half the distance at 60 km/h and the other half at 105 km/h.
Energy Budget and Habitability
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