Answer:
total work is 99.138 kJ
Explanation:
given data
diameter = 5 cm
depth = 75 m
density = 1830 kg/m³
to find out
the total work
solution
we know mass of volume is
volume = 
volume = 
so
work required to rise the mass to the height of x m
dw = 
gx dx
so total work is integrate it with 0 to 75
w = 
w = 
× 0.05² × 1830× 9.81× 
w = 99138.53 J
so total work is 99.138 kJ
When the winch is pulling it up it's first hill, it is losing it's energy to give it to the coaster. It starts gaining energy because its height. Then when it goes down the hill, gravity kicks in and the potential energy turns into kinetic energy.
Answer: Gravitational force and drag force
Explanation:
For a snowboard jumper in the air, two forces would be acting. One in the downward direction- the gravitational pull and second in the opposite direction to the motion, the drag force due to air. If the snowboard jumper jumps in the air at a certain angle with the horizontal. The forces are written as the sum of vertical and horizontal components. Hence, for the modeling the motion, gravitational force and drag force are important,
Answer: hertz (Hz) i think :)
Answer:
15m/s
Explanation:
add the two speeds and divide by 2
10+20=30
30/2=15
