When you first learn some information, the first place it goes in your brain is to your short-term memory. So, you read something, or hear something, and it stays in your short-term memory for a little while. If you don't hear it again, or that information doesn't get repeated, it is likely to disappear from your memory - you will forget it. However, the more you repeat that information, the more likely it is that it will be remembered, that is, it will enter your long-term memory and stay there for a long time.
Hope this helps :)
Answer:
Explanation:
A 26-kg crate, initially at rest on a horizontal surface, requires a 72-N horizontal force to set it in motion.
Maximum Frictional force on stationary object F = μs R where μs is coefficient of static friction and R is reaction of ground which is equal to weight for object placed on horizontal surface .
F = μs x mg
Given F = 72 , m = 26
72 = 26 x 9.8 x μs
μs = .28
Kinetic friction : ---
Frictional force on moving object F = μk R where μk is coefficient of kinetic friction and R is reaction of ground which is equal to weight for object placed on horizontal surface .
F = μk x mg
Given F = 72 , m = 26
54 = 26 x 9.8 x μk
μk = .21
Answer is Chemical Energy.
Not thermal because the molecules of the material aren't moving. And certainly not kinetic because it's not moving and kinetic energy is the energy of motion.
Hope this helps. - M
Answer:
11m/s^2
Explanation:
Acceleration can be calculated by diving speed by time. Since we know speed and time, acceleration can be calculated.
55/5 = 11m/s^2
Minimum velocity occurs at the top of the trajectory, where
the projectile stops rising and starts falling. For a split second,
it has no vertical speed at all, and its velocity is only the horizontal
speed (which doesn't change).