Answer:
When there is no force acting on a body then a moving object move in a straight line with constant velocity and an object in rest stays in rest.
Explanation:
When there is no force acting on a body then a moving object move in a straight line with constant velocity and an object in rest stays in rest.
Answer:
The extension of the spring is 0.392 m.
Explanation:
Given;
spring constant, k = 50 N/m
mass attached to the spring, m = 2.0 kg
let the extension of the spring = x
The extension of the spring is calculated by applying Hook's law;
F = kx
mg = kx

Therefore, the extension of the spring is 0.392 m.
The shape of the earth is an <span>oblate spheroid.</span>
4. Dark Energy.
This is the mysterious force causing the expansion of space. No one has ever seen this force.
Answer:
This question is incomplete
Explanation:
This question is incomplete. However, the formula to be used here is
ω = 2π/T
Where ω is the angular frequency (in rad/s)
T is the period - the time taken for Block A to complete one oscillation and return to it's original position.
To solve for this period T, the formula below should be used
T = 2π√m/k
where m is the mass of the object (Block A) and k is the spring constant (281 J/m²)