The overall stopping distance would be around 122m (400ft)
This is made up of a thinking distance of 24m (79ft) and an actual stopping distance of 98m (321ft).
The thinking distance is around 3m for every 10mph of speed and the overall stopping distance is calculated as follows:
2x20 ft at 20mph
2.5x30 ft at 30mph
3x40 ft at 40mph
3.5x50 ft at 50mph
4x60 ft at 60mph
4.5x70 at 70mph
5x80 at 80mph = 400 ft james s
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You can use a ratio here, say 40mph/150ft = 80mph/xft then cross multiply: 40x = 150 * 80 40x = 12000 x = 300
The total stopping distance for a car travelling at 30 mph on a dry surface is about 75 feet. However, you may wish to note that in most countries, driving a car on the pavement is illegal.
0.07km
We are not told if the car just reaches the deer, or gets to some other distance before or past the deer. If it just reaches the deer, it traveled 90 metres of course. From the information supplied it doesn't matter where the deer was.
228ft