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26 Nov 2019
A Ford Focus travels 0.250 mi in 19.9 s, starting from rest. Thesame car, when braking from 60 mph on dry pavement, stops in 146ft. Acceleration is constant in each part of motion, but notnecessarily the same acceleration when slowing down as whenspeeding up.
What is the magnitude of the car's acceleration while braking andwhile speeding up?
How long does it take the car to stop while braking from 60mph?
If its acceleration is constant while speeding up, how fast willthe car be traveling after 0.250 mi of acceleration?
A Ford Focus travels 0.250 mi in 19.9 s, starting from rest. Thesame car, when braking from 60 mph on dry pavement, stops in 146ft. Acceleration is constant in each part of motion, but notnecessarily the same acceleration when slowing down as whenspeeding up.
What is the magnitude of the car's acceleration while braking andwhile speeding up?
How long does it take the car to stop while braking from 60mph?
If its acceleration is constant while speeding up, how fast willthe car be traveling after 0.250 mi of acceleration?
