Question

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Answer 1

Answer:

Speed Velocity

It is the rate of change of distance. It is a rate of change of displacement.

It cannot be negative. The velocity of moving Objects can be negative, positive or can be zero.

A body is said to have uniform velocity when the body is travelling equal distance in equal interval of time , in a particular direction

Position describes the location of an object.

Often you describe where something is by comparing its position with where you currently are. You might say, for example, that a classmate sitting next to you is about a meter to your right, or that a mailbox is two blocks south of where you live.

Answer 2

Q.15

initial velocity,u = 80km/h =

final velocity,v = 60km/h

time taken,t = 5s

acceleration= v - u / t

= 80-60/5

= 20 /5

= 4