Question

According to recent typical test data, a Ford Focus travels 0.220 mi in 19.0 s , starting from rest. The same car, when braking from 62.0 mph on dry pavement, stops in 141 ft . Assume constant acceleration in each part of its motion, but not necessarily the same acceleration when slowing down as when speeding up.

1) Find the magnitude of this car's acceleration while braking.

2)Find the magnitude of this car's acceleration while speeding up.

3)If its acceleration is constant while speeding up, how fast (in mi/h) will the car be traveling after 0.220 mi of acceleration?

4)How long does it take the car to stop while braking from 62.0 mphmph ?

Answer 1

Hii

Thanks