Question

a trolley while going down an inclined plane has an acceleration of 2çm/s square what will be its velocity 3s after the start​

Answer 1

Answer:

6 cm/s^2

Explanation:

• according to the equations of motion,. v=u-at
• but here the object is going in downward direction so acceleration will be negative
• so the equation will be v=u+at
• here the object starts it motion so u=0
• so v=at
• so v= 2(3)=6cm/s^2

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.