Two toy cars with a combined momentum of 7 kg m/s collide and stick together. If the velocity of the combined object after collision is 3.5 m/s what is the combined object's mass?

When applying kirchhoff's rules, one of the essential steps is to mark each resistor with plus and minus signs to label how the electric potential changes from one end of the resistor to the other. the circuit in the drawing contains four resistors, each marked with the associated plus and minus signs. however, one resistor is marked incorrectly. which one is it?

Work = force × a. work b. energy c. distance d. momentum

Examine the nuclear reacti why is this classified as a nuclear reaction rather than a chemical reaction? it is not balanced. a new compound is formed. a change has occurred in a nucleus. a new element has been formed.