Question

A body is travelling with a speed of – 20 meter per second. is it speed or velocity? Why? ​

Answer 1

Answer:

Initial velocity

u

=20j

Final velcoity

v

=15i

time t=50s

Hence acceleration is

a

=

t

v

−

u

⟹

a

=

50

15i−20j

⟹a=

50

15

2

+20

2

=

50

25

⟹a=0.5m/s

2

solution