How much input force is required to lift the little elephant? Fi= 18,801,250 N
Fi= 178 N
Fi= 178
Fi= a lot!!!

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask

real, smaller and upside-down.   so the answer should be b.

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.