Question

Velocity of a car started from rest reaches 24 m/s in 4 s. (a) What are the initial velocity and the final velocity of the car? (b) Calculate its acceleration? (c) Write any two point difference between speed and velocity?

Answer 1

Answer:

Explanation:

a) Initial velocity =0

Final velocity= 24 m/s

time=4 seconds

acceleration=?

b) V=U+AT

24=0+A*4

24= 0+4A

24-0=4a

24=4a

24/4=a

6=a

c) 1- Speed is scalar quantity but velocity is a vector quantity

2-Speed is always positive but velocity is positive and negative.

Answer 2

Explanation:

$intial \: velocity \: = 0 \\ accelration \: = 6 \\ \\ \\ \\ \\ speed \: is \: show \: only \: magnitude. \\ it \: change \: in \: direction \\ \\ \\ velocity \: is \: shows \: magnitude \: and \: direction. \\ it \: change \: in \: displacement.$