Question

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

Answer 1

Given that:

• Acceleration = 2 cm/s sq.
• Time = 3 seconds
• Initial velocity = 0

Firstly let us convert cm/s sq. into m/s sq. as the SI unit of acceleration is m/s sq.

→ 1 cm = 1/100 m

→ 2 cm = 2/100 m

→ 2 cm = 0.02 metres

____________________________

To calculate:

• The final velocity

Solution:

• The final velocity = 0.06 m/s

Using concept:

• First equation of motion

Using formula:

• v = u + at

Required solution:

→ v = u + at

→ v = 0 + 0.02(3)

→ v = 0 + 0.06

→ v = 0.06 m/s

→ Final velocity = 0.06 m/s $\:$