A 90kg football receiver named Reggie is running at 6.7m/s to catch a pass. A defensive back (103kg) named Julio is waiting in position to hit him (standing still). They fall to the ground together after the tackle. How fast
are they going after the collision?

reciever is going to be going the momentum which is 90 times 6.7, so defensive back who is 103 KG and standing still therefore has no momentum, so the collision is 6.7 m/s against the defense

Explanation:

zero momentum

newton's 1st law of motion, when something is acted upon by an unbalanced force.

if you already have the answer to (a), then just work out how many periods there are in 1 minute, and that's the answer to (c).

b

step-by-step explanation: a third of 24 is 8, 8 times 3 is 24 so 8 - 2 would be 6