A helicopter travelling at a velocity of 15 m/ s [W] accelerates uniformly at a rate of 7.0 m/ s 2 [E] for 4.0 seconds. What is the helicopter’s final velocity?
To find the final velocity of the helicopter, we can use the equation:
final velocity = initial velocity + (acceleration * time)
Given:
Initial velocity (u) = 15 m/s [W]
Acceleration (a) = 7.0 m/s² [E]
Time (t) = 4.0 seconds
Plugging in the values into the equation:
final velocity = 15 m/s + (7.0 m/s² * 4.0 s)
final velocity = 15 m/s + 28 m/s
final velocity = 43 m/s
Therefore, the helicopter's final velocity is 43 m/s.