Well this is question is easy. I mean i’m the one to say the least, The answer is.. SIKE L bozo imagine not knowing the answer
D, it is considered unethical today
The average velocity of a car that travels 450 km north in 9.0 h is 5.0 x 10 km/h
Answer:
50
Explanation:
The mechanical advantage of a machine is given by
where
is the output force
is the input force
For the crowbar in this problem,
is the force in input applied by the worker
is the force that the machine must apply in output to overcome the resistance of the window and to open it
Substituting into the equation, we find
Answer:
A and B
Explanation:
Because both of them have only magnitude not direction.
