Answer:
The deceleration of the plane is 0.25 m/.
Explanation:
Deceleration is the converse of acceleration.
From first law of motion, we have;
v = u + at
where: v is the final velocity, u is the initial velocity, a is the acceleration and t is the time taken.
Thus,
v = 50 m/s
u = 80 m/s
t = 120 s
50 = 80 + 120a
50 - 80 = 120a
-30 = 120a
a =
= -0.25
a = -0.25 m/
The deceleration of the plane is 0.25 m/.
Answer:
C) By unbalanced forces acting on the object
Explanation:
Unbalanced forces can cause an object to change its motion.
If an object is at rest and an unbalanced force pushes or pulls the object, it will move. Unbalanced forces can also change the speed or direction of an object that is already in motion
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<span>B) reproduce asexually and at a fast rate. </span>