A toy airplane is flying at a speed of 6 m/s with an acceleration of 0.3 m/s2.
1 answer:
The final velocity of the airplane is 7.2 m/s
Explanation:
The motion of the airplane is a uniformly accelerated motion, (constant acceleration), therefore we can use the suvat equation
v = u + at
where
v is the final velocity
u is the initial velocity
a is the acceleration
t is the time
In this problem, we have
u = 6 m/s is the initial velocity
is the acceleration
t = 4 s is the time elapsed
Substituting the values, we find the velocity after 4 seconds:
Learn more about accelerated motion:
#LearnwithBrainly
You might be interested in
Answer:
1/3 the distance from the fulcrum
Explanation:
On a balanced seesaw, the torques around the fulcrum calculated on one side and on another side must be equal. This means that:
where
W1 is the weight of the boy
d1 is its distance from the fulcrum
W2 is the weight of his partner
d2 is the distance of the partner from the fulcrum
In this problem, we know that the boy is three times as heavy as his partner, so
If we substitute this into the equation, we find:
and by simplifying:
which means that the boy sits at 1/3 the distance from the fulcrum.