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**A few beginner physics questions~~**

I just started taking Physics and Im already getting stumped on what seem to be the easiest questions...

heres a few:

1. A bullet goes 750 km/hr and hits its target 2.0 seconds later. How far away is the target? (Look at the units)

What I did was change the kilo meters to meters by multiplying 750 x 1000= 75000. Then 75000 x 3600 to convert the hours to seconds and got 270000000!! The right answer is .42 km so I would like to know how my answer is OBVIOUSLY wrong.

2. A car going 12 m/s speeds up to 45 m/s in 5 seconds. How much distance did it cover in that time?

I thought you were supposed to subtract 45-12=33 m/s and 33 becomes your accuracy and 12 and 45 were your initial and final velocity and plug all those into a distance formula. What I cameup with was 472.5 m but the correct answer is supposed to be 142 m!! What did I do wrong XD??!!