Question

A body moving with uniform acceleration has initial velocity45 km/hr and acceleration 20 cm/ s square find its velocity after25 second

Answer 1

Answer:

Final Velocity(v) = ?

Initial Velocity(u) = 45 km/h

Convert it into m/s

= 12.5 m/s

Acceleration(a) = 20 cm²

Convert into m/s²

= 0.2 m/s²

Time = 25 seconds

Using first equation of motion =

v = u + at

v = 12.5 + 0.2(25)

v = 12.5 + 5

v = 17.5 m/s

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