Answer:
5m/ .
Explanation:
Mass of the crate (m) = 9.0 Kg
Horizontal force applied to the crate(F) = 45 N .
Now,
According to the Newton's Law's of motion ,
F = ma , where a represents the acceleration of body of mass m when subjected to the horizontal force F under frictionless conditions .
Thus,
45 = 9a
a = 5 m/ .
Thus , the resulting acceleration of the crate will be 5m/ .
I think you have them all marked correctly
7. They carry hereditary material from parent
8. 50 percent
1. Nutrition
2. X-linked dominant
If Im wrong Im sorry. its been like 4 years since i took biology but i remember some things
This is a momentum problem, so let's find the velocity of the ball initially. It can be given by:
Let's plug in values and solve for a:
Now, we can multiply by time to get velocity:
We have all the information we need, so let's set up an equation to solve for the velocity of the wall after the collision:
Solve for velocity of wall finally:
Plug in all values:
So, the final velocity of the wall will be
10.98 m/s.
The KE in this problem initially was 110889 J (1/2mv^2). After the collision it was 52640.1 so, the
KE decreased.
Since there was no mashing of objects together, this was an
elastic collision.