Question

5. A 110 kg football player runs at 8 m/s and plows into an 80 kg referee standing on the field causing the referee to fly forward at 5.0 m/s.

a. What is the momentum of the football player before the collision?

b. What is the momentum of the referee before the collision?

c. What is the total momentum before the collision?

d. What is the momentum of the referee after the collision?

e. What must the momentum of the football player be after the collision?

f. Find the football player’s speed after the collision

​

Answer 1

Explanation:

(110+85)v=110(8.8)

j

^

+85(7.2)

i

^

∣

v

∣=

195

(11×88)

2

+(85×7.2)

2

=5.9ms

−1

tanβ=

242

153

or β=tan

−1

244

153