Acar that is traveling in a straight line at 40 km/h can brake to a stop within 20 m. if the same car is traveling at 120 km/h what would be its stopping distance in this case? assume the braking force is the same in both cases and ignore air resistance.

F500 j of energy were added to 1 kg of each of these samples, which would experience the least temperature increase?

Aturntable a is built into a stage for use in a theatrical production. it is observed during a rehearsal that a trunk b starts to slide on the turntable 10 s after the turntable begins to rotate. knowing that the trunk undergoes a constant tangential acceleration of 0.31 m/s2, determine the coefficient of static friction between the trunk and the turntable.

**urgent** roberto plans to use two transformers to reduce a voltage of 120 v to 4 v. he uses a transformer that has 300 coils in the primary winding and 50 coils in the secondary winding. he has four other transformers, as listed in the table. which transformer should roberto use to have an ending voltage of 4 v? a- w b-xc- yd- z