Answer:
The impulse on the object is 60Ns.
Explanation:
Impulse is defined as the product of the force applied on an object and the time at which it acts. It is also the change in the momentum of a body.
F = m a
F = m([tex]\frac{v_{2} - v_{1} }{t}[/tex])
⇒ Ft = m([tex]v_{2}[/tex] - [tex]v_{1}[/tex])
where: F is the dorce on the object, t is the time at which it acts, m is the mass of the object, [tex]v_{1}[/tex] is its initialvelocity and [tex]v_{2}[/tex] is the final velocity of the object.
Therefore,
impulse = Ft = m([tex]v_{2}[/tex] - [tex]v_{1}[/tex])
From the question, m = 3kg, [tex]v_{1}[/tex] = 0m/s and [tex]v_{2}[/tex] = 20m/s.
So that,
Impulse = 3 (20 - 0)
= 3(20)
= 60Ns
The impulse on the object is 60Ns.
