Which main body system is responsible for breaking down food from energy?
a: circulatory system
b: digestive system
c: muscular system
d: skeletal system

Ben(55 kg) is standing on very slippery ice when junior(25kg) bumps into him. junior was moving at a speed of 8m/s before the collision and ben and junior embrace after the collision. find the speed of ben and junior as they move across the ice after the collision .

Determine the maximum r-value of the polar equation r =3+3 cos 0

A2000 kg car is rounding a curve of radius 200 m on a level road. the maximum frictional force the road can exert on the tires of the car is 4000 n. what is the highest speed at which the car can round the curve?