A. pure water ....................
The pet store would be the reference point because it is where he started and it will not move. Hope this helped.
Answer:
I think A because astroids are stronger than a crash. Hope I helped! :)
Explanation:
Which ramp is going to make the ball travel down faster?
The 2nd ramp because it is steeper and would give the ball a faster push caused by gravity than the 1st ramp.
Answer: 0.00068 N
Explanation: Universal gravitational constant=6.674 *10^(-11)
Force=Gm1m2/(r^2)
Force= 6.67*25000*40000*10^(-11)/(10^2)
Force=0.00068 N
