A car got in a wreck, when the Police asked how fast the driver was driving before he hit the brakes, he said 60 km/h(16.7m/s). How long should the skid marks be; assuming that the car can accelerate at -10. m/s^2. Do they have a witness that said it took him 0.59 seconds to stop?

force is mass*acceleration.

we have a very small mass: 11.4*0.001 kg

if we want 0.035n of force, we need an acceleration:

0.035 = 11.4*0.001*a

a = 0.035/(11.4*0.001) m/s^2

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles

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