Answer: the velocity of the cart after it hits the wall
Explanation:
Impulse is the force exerted in a small interval of time. It can also be defined as the change in momentum.
I = F Δt = m v - m u = m(v-u)
where, m is the mass of the object, v is the final velocity and u is the initial velocity.
It is measured in Newton-seconds or kilogram-meter per second.
When the mass of the cart and initial velocity is given, the final velocity is required after it hits the wall in order to calculate the impulse delivered to the lab cart.