3. Define the following
(a) Acceleration
(b) Balance force
(c) Inertia
(d) Momentum.
Answers
1.acceleration the rate of change of velocity of a
moving body is called acceleration
2.balanced forces and the resultant of all forces acting on a body is zero the forces are called balanced forces
3.inertia tendency of any body to resist any attempt to change its velocity
4.Momentum is defined to be the product of mass and velocity
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Explanation:
a.Acceleration is the rate of change of velocity. At any point on a trajectory, the magnitude of the acceleration is given by the rate of change of velocity in both magnitude and direction at that point. The true acceleration at time t is found in the limit as time interval Δt → 0 of Δv/Δt.
b. A force where two forces of equal size, act on a body, in opposing directions is known as a Balanced Force. In Balanced Force, a body continues to be in its position i.e. it may be continuously moving with the same speed and in the same direction or it may be still in its position.
c. The moment of inertia, otherwise known as the mass moment of inertia, angular mass or rotational inertia, of a rigid body is a quantity that determines the torque needed for a desired angular acceleration about a rotational axis; similar to how mass determines the force needed for a desired acceleration. It depends on the body's mass distribution and the axis chosen, with larger moments requiring more torque to change the body's rate of rotation.
d. the strength or force that has when it is moving. : the strength or force that allows something to continue or to grow stronger or faster as time passes. physics : the property that a moving object has due to its mass and its motion.
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