Question

s=t3-6t2. Find velocity at t =1s, 2s and 3s. Find the time when the body is at rest. ​

Answer 1

Answer:

Explanation:

=6t

2

−t

3

v=

dt

ds

=12t−3t

2

If. v=0, then 12t−3t

2

=0 .... (A)

Solving, we get t=0 sec or t=4 sec

Thus, the particle will attain zero velocity at the time of 4 seconds.

Answer 2

Answer: Solving, we get t=0 sec or t=4 sec

Explanation: =6t

2

−t

3

v=

dt

ds

=12t−3t

2

If. v=0, then 12t−3t

2

=0 .... (A)

Solving, we get t=0 sec or t=4 sec

Thus, the particle will attain zero velocity at the time of 4 seconds.

hope you get my point thanks for asking any other help can ask me