A giraffe walking at 3m per second accelerates at 2m per second squared to 15 seconds. What speed does it end up at?
To find the final speed of the giraffe, we can use the equation of motion:
v = u + at
Where:
v = final velocity (speed)
u = initial velocity (speed)
a = acceleration
t = time
In this case,
u = 3m/s (initial speed)
a = 2m/s² (acceleration)
t = 15s (time)
Now let's substitute the values into the equation and solve for v:
v = u + at
v = 3m/s + (2m/s²)(15s)
v = 3m/s + (2m/s² * 15s)
v = 3m/s + 30m/s
v = 33m/s
Therefore, the giraffe will end up at a speed of 33 meters per second.