Question

a trolley while going down an inclined plane has an acceleration of 2 cm per second square what will be its velocity 3 seconds after the start

Answer 1

a = 2 cm/s^2 ; t = 3 s ; u = 0 m/s

As v = u + a t

so, v = 0 + 2×3 cm/s

so, v = 6 cm/s

Hence the velocity will be 6 cm /s after 3s from the start.

Answer 2

┏─━─━─━─━∞◆∞━─━─━─━─┓ ✭✮ӇЄƦЄ ƖƧ ƳƠƲƦ ƛƝƧƜЄƦ✮✭ ┗─━─━─━─━∞◆∞━─━─━─━─┛

➧ a ➾ 2 cm/s²
➧ u ➾ 0
➧ t ➾ 3 sec
➧ v ➾ ?

❱ So, v = u + at

v = 0 + (2 cm/s²) × (3 s)
v = 0 + 6 cm/s
v = 6 cm/s ...✔

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