Answer:
24 m/s
Explanation:
Applying Newton's second law of motion,
F = ma................ Equation 1
Where F = force acting on the object, m = mass of the object a = acceleration of the object.
First we calculate for a.
make a the subject of the formula in equation 1 above
a = F/m............... Equation 2
Given: F = 3 N, m = 0.5 kg.
Substitute into equation 2
a = 3/0.5
a = 6 m/s²
Secondly we calculate the velocity by using,
v = u+at................... Equation 3
Where v = Final velocity of the object, u = initial velocity of the object, t = time interval
Given: u = 0 m/s (at rest), a = 6 m/s², t = 4 s
Substitute into equation 3
v = 0+6(4)
v = 24 m/s
