Question

A trolley moving with 4 cm/s has an acceleration of 2cm/s2 . Its velocity after 2s is​

Answer 1

Apply first equation of motion:

v = u + at

• initial velocity = u = 4 cm/s
• acceleration = a = 2 cm/s²
• time = t = 2s
• final velocity = v = ?

Solution:

--- v = u + at

--- v = 4 + 2(2)

--- v = 4 + 4

--- v = 8 cm/s

★Its velocity after 2s is 8cm/s.

Answer 2

Explanation:

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Apply first equation of motion:

v = u + at

initial velocity = u = 4 cm/s

acceleration = a = 2 cm/s²

time = t = 2s

final velocity = v = ?

Solution:

--- v = u + at

--- v = 4 + 2(2)

--- v = 4 + 4

--- v = 8 cm/s

★Its velocity after 2s is 8cm/s.

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