Answer:
2300 N west
Explanation:
According to Newton's second law of motion, the net force on an object is equal to its mass times its acceleration. The average acceleration of an object is equal to the change in velocity over the change in time. Using these two equations, we can use the provided information to solve for the net force.
The average acceleration is:
a = (v − u) / t
where v is the final velocity, u is the initial velocity, and t is time.
The net force is:
F = ma
Substituting:
F = m (v − u) / t
Plugging in values:
F = (1242 kg) (13.2 m/s − 35.4 m/s) / (12 s)
F = -2300 N
The magnitude of the net force is 2300 N. The sign is negative, so the direction is opposite of the velocity, or west.
