D, making observations. If you make observations, you obtain information through the senses.
The velocity will remain unchanged (Newton’s 1st Law) unless a force acts on it. If no friction force, then the velocity remains constant.
Answer:
The banking angle is 23.98 degrees.
Explanation:
We have,
Radius of a curve is 35 m
Speed of a car is 7 m/s
It is required to find the banking angle. At equilibrium, net force is equal to the centripetal force between vehicle and the road such that the banking angle is given by :
g is acceleration due to gravity
So, the banking angle is 23.98 degrees.
The forces acting on the skydiver is:
1. Gravity in downward direction
Force = mg = 70*10 = 700 N
2. Air resistance in upward direction
It is negligible.
SO resultant force is the gravity which is 700N in downward direction.