Can you help me decide whether these are true or false?

- Only the net force acting on an object can do work.


- Motor A does twice the work as motor B. Therefore, motor A produces twice as much power as motor B.


- A massive elephant can have less kinetic energy than a lightweight gazelle.


- A slow-moving elephant can have more kinetic energy than a fast-moving cheetah.


- Static friction does no work on an object.


- Friction can do positive work on an object.Can you help me decide whether these are true or false?
1. true, because net force acting can only do some work


2. false, because power depends on time


3. true, because the speeds may be different


4. true, becasue masses are different


5.true, becasue the object is at rest


6.true, because friction can also act in the direction of motion.Can you help me decide whether these are true or false?
1) T


2) F


3) T


4) T


5) T


6) T