A 70.0-kg football player runs North at 9.0 m/s and is met by a 60.0 kg defensive tackler running South at 10.0 m/s. The total momentum is

630 kg m/s North

1230 kg m/s South

30 kg m/s North

given to the winning football team

0

Inductive or deductive? charles is hard to work with, since he always interrupts others. therefore, i do not want to work with charles in the development committee.

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 710 n/m. it is initially at rest on an inclined plane that is at an angle of θ = 23° with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is μk = 0.19. 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. a) what is the block's initial mechanical energy? 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.

Aray of light traveling parallel to the principal axis of a concave mirror will be reflected through the mirror's