Answer:
<h2>2500 J</h2>
Explanation:
The average kinetic energy can be found by using the formula

m is the mass
v is the velocity
From the question we have

We have the final answer is
<h3>2500 J</h3>
Hope this helps you
Solid, liquid, gas, and plasma. hope that helped
Answer:Train A is 90 m long and running at 72 km/h.
Train B is 120 m long and running at 36 km/h.
When the trains are running in opposite directions, their relative speed gets added: 72+36 = 108 km/h.
The total length of A and B = 90+120 = 210 m
So the time taken to cross each other = 210 m*60*60/108*1000m
= 7 seconds
Explanation: