Answer:
The velocity of the car after 3 seconds is 5.5 m/s
Explanation:
Mathematically, we can get the acceleration of the car first;
F = m•a
where m is the mass, F is the applied force and a is the acceleration
from the question;
F = 1500 N , m = 4500 kg and a = ?
By rewriting the formula;
a = F/m
a = 1500/4500 = 1/3 m/s^2
Now to get the velocity of the car after 3 seconds;
Mathematically;
V = U + at
where V is the final
velocity, U is the initial velocity,
From the question, we are trying to get V;
where U = 4.5 m/s
a = 1/3 m/s^2 and t = 3 seconds
Thus;
V = 4.5 + (1/3)(3)
V = 4.5 + 1
V = 5.5 m/s
