Answer:
The answer is....
Explanation:
How hard the surfaces push together and the types of surfaces involved.
I believe the 4th answer is the correct one for four and number five I believe is 33 degrees. I hope this helped.
B the answer is b in this equation
Answer:
c
Explanation:
neither the spring or hands are in the action of movemnet
From 50km/h to 0km/h in 0.5s we need next acceleration:
First we convert km/h in m/s:
50km/h = 50*1000/3600=13.8888 m/s
a = v/t = 13.88888/0.5 = 27.77777 m/s^2
Now we use Newton's law:
F=m*a
F=1700*27.7777 = 47222N
