A 10000 N car comes to a bridge during a storm and finds the bridge washed out.

Question

A 10000 N car comes to a bridge during a storm and finds the bridge washed out. The 750N driver must get to the other side, so he decides to try leaping it with his car. The side the car is on is 20.8m above the river, while the opposite side is a mere 2.20m above the river. The river itself is a raging torrent 63.0m wide.

Part A

How fast should the car be traveling just as it leaves the cliff in order to clear the river and land safely on the opposite side?

Part B

What is the speed of the car just before it lands safely on the other side?

Explanation / Answer

gnoring air resistance and wind speed (and the fact that a car is not a point mass - moreover, it can be front wheel drive or rear wheel drive or all wheel drive);

- the car drops ( 19.2 - 2.4 = ) 16.8 meters
- with gravity (A) at 9.8 m/sec

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