Question

6
Question M
(4 Points)
At any instant1 the velocity and acceleration of
particle moving on straight line are v and a
respectively, speed of particle decreases if
(1) v> 0.a < 0
(2) v <0, a < 0
(3) v>0, a > 0 (4) v>0, a = 0
Note Book
Option 1
Option 2
Option 3
Option 4​

Answer 1

Answer:

If the velocity v of a particle moving along a straight line decreases linearly with its displacements from 20ms

−1

to a value approaching zero at s = 30 m, then acceleration of the particle at s = 15 m is:

A .

3

2

ms

−2

B .

−

3

2

ms

−2

C .

3

20

ms

−2

D .

−

3

20

ms