Physics finals concept questions???

Question

• Which units are derived units? Which are fundamental units?
• Which are vectors, scalars?
• What’s slope of position vs time graph? Is this quantity average or instantaneous?
• Determine the relative momentum of 2 colliding objects.
• What are MKS units for mechanical power?
• According to newton’s law of universal gravitation, describe proportionality relative to the masses of 2 objects.
• According to newton’s law of universal gravitation describe proportionality relative to distance b/t objects.
• Which law is the statement, “ the force of attraction b/t 2 objects is directly proportional to the product of the masses of the objects and inversely proportional to the square of the distance b/t their distance of mass”
• Which angle maximizes the range of the projectile.
• If friction force double how long it take to come to rest compared to not doubled friction force
• What’s the resultant force when pulling 2 ropes one 50N north other 30N east? 20N NW????
• What’s tendency of an object to resist change in motion?
• Which 2 angles of projectile motion result in projectile landing in same place?
• To cross flowing river which directions for least time and least distance?
• Crate dropped from plane when box hits where will it be relative to the plane with no air friction?
• What are 2 vectors in the horizontal and vertical directions that replace single vector?

I appreciate any help as these are the only concepts left that are a little fuzzy for me. I'll check back in 20 min as I'm cramming for Precal as well. THANK YOU!!!!!!!!

Answer 1

1. The fundamental units which define measurements of physical quantities ( Mass, distance, time, charge and etc.)
Derived units are generated from fundamental units (Velocity, force, torque and etc.) .
2. Scalar has only magnitude (mass, coefficient of friction, speed) a vector has both magnitude and direction ( Force, acceleration velocity)
3. Oh no.... I got to have a life and you have to study. Get back to me if you have questions.

Answer 2

Angle is needed to find the final velocity. One such question is enough for me, I do not need to see more of them.