Question

Numericals of velocity with the help of equation of motion

Answer 1

Answer:

body is moving with an initial velocity of 2

i

^

m/s and acceleration of −0.5

i

^

m/s

2

. Find the time when the velocity of the particle becomes zero.

Final velocity, v=0

v=u+at

0=2

i

^

−0.5

i

^

t

t=4s

PROBLEMS ON SECOND EQUATION OF MOTION - DEFINITION

If initial velocity of a particle is 2 m/s and it travels 10 m in 1 s then what will be its acceleration?

Since s=ut+1/2at

2

10=2×1+1/2a×1

2

a=16 m/s

2

PROBLEMS ON THIRD EQUATION OF MOTION - EXAMPLE

Let the initial velocity of the particle is 5 m/s. It is accelerating at an acceleration of 1m/s

2

. Its final velocity is 10 m/s. Then the distance traveled by this particle will be given by:

v

2

=u

2

+2as

10

2

=5

2

+2×1×s

s=37.5 m