Question

A 0.25 kg baseball is in contact with a bat for 0.0075 s and exerts a force of 18,500 N. What impulse is delivered to the ball? 33 kg • 140 kg • 4600 kg • 74,000 kg •

Answer 1

impulse = force*time = 138.75 kgm/s

round off and we get 140

Answer 2

Hey dear,

◆ Answer-
I = 138.5 Ns

◆ Explaination-
# Given -
m = 0.25 kg
t = 0.0075 s = 7.5×10^-3 s
F = 18500 N = 18.5×10^3 N

# Solution-
Impulse delivered to the ball is given by -
I = F.t
I = 18.5×10^3 × 7.5×10^-3
I = 18.5 × 7.5
I = 138.5 Ns

Impulse delivered to the ball is 138.5 Ns.

*As options don't include 138.5 Ns, nearest correct option is 140 Ns.

Hope this helps you...