You are sprinting toward an ice cream truck that is parked up the street at a stop sign. The tantalizing melody you hear a. is slightly lower pitched than it sounds to the driver of the truck
b. is slightly higher pitched than it sounds to the driver of the truck
c. is slightly lower in speed than it sounds to the driver of the truck
d. is slightly higher in speed than it sounds to the driver of the truck
e. is the same as it sounds to the driver of the truck

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 740 n/m. it is initially at rest on an inclined plane that is at an angle of theta= 26 with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is uk = 0.17. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. the block's initial mechanical energy is 9.472 j.b. if the spring pushes the block up the incline, what distance l in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.