PLEASE HELP
a skier crosses a 100m flat section past the chair lift at a constant velocity of 6m/s, then accelerates downhill at a rate of 0.5m/s^2 until reaching a maximum velocity of 12m/s.
a) how long did it take them to speed up?
b) if the skier maintains the 12m/s speed for an additional 20s to the bottom of the hill, what is the total displacement of the skier after they got off the chairlift?

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.

How much energy will be transferred to your eardrum while listening to this sound for 1.0 min?

Abowling ball rolls 32 meters in 0.8 seconds what is the average speed in m/s of the bowling ball in m/s