So there are different ways this could be solved. I'll do try to explain it the way I was taught...
Simon is riding his bike at 12 km/hr relative to the sidewalk, away from where Keesha is.
Simon throws the ball at Keesha, at 5 km/hr.
Keesha sees the ball approaching her at (12-5) = 7 km/hr relative to the ground to her.
Therefore the answer is: 7 km/hr
l will help and if you get it correctly I will say you are welcome
I'm not sure but it might explode and make the wood catch fire
Answer:
absorbed/taken in
Explanation:
endo means internal; within.
exo means external; from outside.
