QA: This question is typical on some driver’s license exams: A car moving at 40 km/h skids
12 m with locked brakes.
How far will the car skid with locked brakes
at 80 km/h?
Answer in units of m
QB:A cheerleader lifts his 62.2 kg partner straight
up off the ground a distance of 0.89 m before
releasing her.
The acceleration of gravity is 9.8 m/s
2
.
If he does this 19 times, how much work has
he done?
Answer in units of J
QC:Zak, helping his mother rearrange the furniture in their living room, moves a 49.9 kg sofa
7.1 m with a constant force of 37 N.
What is the work done by Zak on the sofa?
Neglect friction.
Answer in units of J
3 answers
what is your thinking on these? Surely you do not want us to give you the answers
no i just need help i am completely lost in physics class, and have no clue what he's even talking about. If any one can help explain how to get even one of them that would be great. :)
i still don't have number QA but number QB is 72 and QC is 262.7
1 answer