Question

a) Calculate the acceleration between points A and B.
(b) Which part of the graph shows retardation? Also, calculate retardation.
(c) What is the acceleration of the body from B to C?
(d) Calculate the distance travelled till point A and from points C to D.
(e) What is the initial velocity of the object?

Answer 1

Answer:

Notice that a line sloping downwards - with a negative gradient - represents an object with a constant deceleration (it is slowing down). Acceleration can be calculated by dividing the change in velocity (measured in metres per second) by the time taken for the change (in seconds).Method 1: Using the position data (distance versus time graph). So, 1/2 a = 1.412 so then a is 2*1.412 =2.824 - thus we have obtained the acceleration from the position graph.Acceleration (a) is the change in velocity (Δv) over the change in time (Δt), represented by the equation a = Δv/Δt. This allows you to measure how fast velocity changes in meters per second squared (m/s^2). Acceleration is also a vector quantity, so it includes both magnitude and direction.According to Newton's second law of motion, the acceleration of an object equals the net force acting on it divided by its mass, or a=Fm.

This equation for acceleration can be used to calculate the acceleration of an object when its mass and the net force acting on it are known.FN is the force acting on a body. When the body is at rest, the net force formula is given by, FNet = Fa + Fg.