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
Answer:
Displacement and acceleration
Momentum is a protector the mass and the velocity of a moving object.
Momentum= mass*speed
For Car A: Mass:1,000 kilograms Velocity: 40 meters/second;
Momentum=1,000 kg*40 m/s
=40000kg.m/s
For Car B: Mass: 4,000 kilograms Velocity 10 meters/second;
Momentum=4000kg*10m/s
=40000kg.m/s
Both cars require the same amount of force to stop. This is because they have the same momentum.
Moving
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