Question

When spiking a volleyball, a player changes the velocity of the ball from 4.5 m/s to -20 m/s along a certain direction.

If the impulse delivered to the ball by the player is -9.7 kg * m/s,
what is the mass of the volleyball?

Answer 1

momentum is P=MV
P is impulse, which in this case is -9.7kg*m/s
V is the change is velocity so (-24.7-5.2)
so you just plug all this in the formula

-9.7=(-24.7-5.2)m

then just solve for "m" !

Answer 2

-0.33