Hey! I just started AP Physics 1 as well.
Lets break it down:
Displacement is the change in the position of a vector.
Net means total
This means that Net displacement means the addition of displacements. Also said as the "vector sum of the individual displacements".
This is all I know. Good luck!
Answer:
Explanation:
From the question we are told that:
Time 
Angular displacement 
Final Angular velocity 
Let
Angular acceleration 
Generally the equation for Initial Angular velocity 
is mathematically given by
Also,Initial Angular velocity is mathematically given by
Therefore substitution
Substitution in the 2nd equation for Initial Angular velocity
Since the equation for Work is as follows....
Work = Force x Displacement
Your equation is...
Work = 300N x 15m
Work = 4,500 Joules
Answer:
4.0 m/s²
Explanation:
Draw two free body diagrams, one for the cart and one for the hanging mass.
The cart has one force acting on it in the x direction: tension to the right.
The hanging mass has two forces acting on it in the y direction: tension up and weight down.
The hanging mass accelerates downward, so if we take up to be positive, then the acceleration is negative.
Apply Newton's second law to the hanging mass:
∑F = ma
T − m₂g = m₂(-a)
T − m₂g = -m₂a
Apply Newton's second law to the cart:
∑F = ma
T = m₁a
Substitute and solve for a:
m₁a − m₂g = -m₂a
m₁a + m₂a = m₂g
(m₁ + m₂) a = m₂g
a = m₂g / (m₁ + m₂)
Given m₁ = 2.3 kg and m₂ = 1.6 kg:
a = (1.6 kg × 9.8 m/s²) / (2.3 kg + 1.6 kg)
a = 4.0 m/s²
