Your brothers mass is 55.0kg, and he has a 2.0 kg skateboard what is the combined momentum of your brother and his skateboard if they are going 8.50 m/s

Atransverse wave is traveling on a string stretched along the horizontal x-axis. the equation for the vertical displacement y of the string is given by y = (1.8 x 10-3)cos[π(13x - 60t)], where all quantities are in si units. what is the maximum speed of a particle of the string

A1,200 kg car is accelerated at 3.7 m/s2. what force was needed to produce this acceleration? a. 4,440 n b. 324.3 n c. 4,388 n d. 304.3 n

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?