Answer:
a) , b)
Explanation:
a) The energy equation for the crate is modelled after the Principle of Energy Conservation and Work-Energy Theorem. Changes in gravitational potential energy can be neglected due to the information of a horizontal surface:
The distance that crate needs to cover before stopping is:
b) The stopping distance is:
Answer:
v = at + u
Explanation:
acceleration, a = constant
As we know that acceleration is the rate of change of velocity
integrate on both sides
v = at + u
Where, u is the integrating constant and here it is equal to the initial velocity
Now we know that the rate of change of displacement is called velocity
Integrate on both sides
where, xo is the integrating constant which is initial position of the particle.