Question

distinguish between the following :
a) scalar and vector quantity
b) distance and displacement
c) Uniform and non uniform motion
d) Positive and negative acceleration​

Answer 1

a. A scalar quantity is a one dimensional measurement of a quantity, like temperature, or mass. A vector has more than one number associated with it. A simple example is velocity. It has a magnitude, called speed, as well as a direction, like North or Southwest or 10 degrees west of North.

b. Distance is the length of the path travelled by a body in certain interval of time, whereas displacement is the shortest distance between the initial and final positions of a body. 2. Distance is a scalar quantity whereas displacement is a vector quantity. ... But distance cannot be zero when displacement is not zero.

c. see the attachment....

d. Positive acceleration means that there is an increase in speed and negative acceleration means that there is a decrease in speed.