Question

3. A trolley, while going down an
inclined plane, has an
acceleration of 2 cm s2. What will
be its velocity 3 s after the start?​

Answer 1

Step-by-step explanation:

a= 2cm/ s2 = 2/100 = 0.02 m/s2

t=3s

u=0mls (initial velocity)

to find final velocity, use equation 1

v=u+at

v=0+0.02×3

=0 06 m/s

Answer 2

Solution,

Here, we have

Initial velocity of the trolley, u = 0 (As starts from rest)

Acceleration of the trolley, a = 0.02 m/s²

Time taken by the trolley, t = 3 seconds

To Find,

Final velocity of the trolley, v = ?

According to the 1st equation of motion,

We know that,

v = u + at

So, putting all the values, we get

⇒ v = u + at

⇒ v = 0 + 0.02 × 3

⇒ v = 0.02 × 3

⇒ v = 0.06 m/s

Hence, the final velocity of the trolley is 0.06 m/s.