(a) State impulse – momentum theorem? (b) A ball of mass 0.1kg is t

1.	(a) State impulse – momentum theorem? (b) A ball of mass 0.1kg is thrown against a wall. It strikes the wall normally with a velocity of 30m/s and rebounds with a velocity of 20m/s. calculate the impulse of the force exerted by the ball on the wall.
Answer» (a) It states that impulse is measured by the total change in linear momentum is Impulse = m (u - v) vector (P₂ - P₁) (b) m = 0.1kg v = 30 m/s υ = −20 m/s Impulse = vector(P₂ - P₁) mu - mv Impulse = m(υ − v)s Impulse = m (-20 – 30) = -5Ns

(a) State impulse – momentum theorem? (b) A ball of mass 0.1kg is thrown against a wall. It strikes the wall normally with a velocity of 30m/s and rebounds with a velocity of 20m/s. calculate the impulse of the force exerted by the ball on the wall.

Answer»

(a) It states that impulse is measured by the total change in linear momentum is Impulse = m (u - v) vector (P₂ - P₁)

(b) m = 0.1kg v = 30 m/s υ = −20 m/s

Impulse = vector(P₂ - P₁) mu - mv

Impulse = m(υ − v)s

Impulse = m (-20 – 30) = -5Ns