Asmall car weighing 2,876 lbs is traveling due north when it collides with a pick-up truck weighing 10,916 lbs which was traveling due east. after the collision the two vehicles move off together at an angle of 24 degree north of east. the driver of the car claimed that the truck driver was at fault because he was exceeding the speed limit going 69 mph.

if this were true, what was the car's initial velocity?

it was determined from skid marks that the velocity of the combined system was 31 mph just after the collision. what was the actual velocity of the car?

what was the actual velocity of the truck?

In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis. then the floor on which the passengers are standing suddenly drops away! if all goes well, the passengers will “stick” to the wall and not slide. clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. part a what is the minimum rotational frequency, in rpm, for which the ride is safe? express your answer using two significant figures. f f = rpm