Potential energy = (mass) · (gravity) · (height)
PE = (60 kg) · (9.8 m/s²) · (10 m)
PE = (60 · 9.8 · 10) · (kg · m²/s² )
PE = 5,880 joules
B the desert was once covered in water
Answer:
a)Taking into consideration Newton’s second law, we know that
Net_Force = mass * acceleration
Since the box is pulled at constant speed, the acceleration is equal to zero.
This means that
Net_Force = 0 N
b) Force of friction
The net force is equal to the sum of all forces,
Net_Force = Force_applied - Friction
We found that Net_Force = 0, which means
Friction = Force_applied = 48 N
c) If the box comes to a stop. And the applied force becomes zero, the friction force becomes also zero.
Friction = 0 N
Answer:
c
Explanation:
I makes the most sense in math. if you put a 3 in the m box it will be the same. So all they did is take out the 3 in the m box
Answer:2.05 m
Explanation:
Given
Mass of sled 
initial speed 
coefficient of kinetic Friction 
According to work-energy theorem work done by all the forces is change in Kinetic energy

,where d= distance moved


