Question

A force of 12 newtons is applied on an object and it gives it an acceleration of 12 ms2. Find the mass of the object and its velocity after 3 seconds?

Answer 1

Answer:

(a) Mass of object, m = 1 kg

(b) Velocity of object, v = 36 m/s

Explanation:

Let F = force applied to object = 12 N

Let a = acceleration acquired by object = 12 m/s^2

Let m = mass of object

Let u = initial velocity of object = 0 m/s

Let v = velocity of object after time t

Let t = duration of time = 3 s

m - mass of the object - is given by:

m = F/a = (12 N) / (12 m/s^2) = 1 kg

m = 1 kg -------------------------(answer)

v - velocity of object after time t - is given by:

v = u + a.t = 0 m/s + (12 m/s^2 x 3 s) = 0 m/s + 36 m/s = 36 m/s

v = 36 m/s ---------------------(answer)