• Describe his velocity (Constant? Changing? Negative? Positive?) 2. Hilda Reset Al" button. Move the man steadily to the left towards the tree.
• Describe his position (Constant? Changing? Negative? Positive?)
Describe his velocity (Constant? Changing? Negative? Positive?)
.
Compare/contrast the man's position from 1/1 to his position from 112
. Compare/Contrast the man's velocity from 1 to his velocity from 82.
3. Hit the "Reset All" button and click to check the box marked "Velocity Vector". Move the man to the
right, slowly at first and then faster.
• Describe the arrow that represents the velocity vector (Direction? Size?)
Describe his velocity. (Constant? Changing? Negative? Positive?)
"p"
phone
point
BIU

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 710 n/m. it is initially at rest on an inclined plane that is at an angle of θ = 23° with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is μk = 0.19. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. a) what is the block's initial mechanical energy? b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.

Assume that a person skiing high in the mountains at an altitude of h = 15100 ft takes in the same volume of air with each breath as she does while walking at sea level. determine the ratio of the mass of oxygen inhaled for each breath at this high altitude compared to that at sea level. assume that the air composition (i.e. % of air that is oxygen) is the same at sea level as it is at 15100 ft.

Awheel of mass 48 kg is lifted to a height of 0.8 m. how much gravitational potential energy is added to the wheel? acceleration due to gravity is g = 9.8 m/s2. a. 30.4 j b. 3.1 j c. 297.9 j d. 11,321 j