Answer:
The answer is It has inertia
Explanation:
I just got it correct on E2020
Answer:
I believe there are 20 Neutrons in Calcium.
Explanation:
Answer:
B
Explanation:
Use conservation of momentum: Total momentum of the system before is the same as the total momentum after the collision. Since both are moving north, the momentum of both cars is in the same direction, and the total momentum before collision is 1000kg*20m/s + 1500kg*36m/s = 74000kg-m/s.
This is the same amount of momentum after collision, and since they are locked together, their mass is added. The velocity can be found by: 74000kg-m/s ÷ 2500kg = 29.6m/s.
momentum = mass*velocity
Answer:
the speed of 0.10 sphere when it is moved to 0.20 kg to the left is : 
Explanation:
Using the expression of the Change in Gravitational Potential Energy:

So when the sphere exerts just 10 kg mass; the change in the gravitational potential energy is :



the change in the gravitational potential energy when the sphere exerts just 5 kg mass is ;



The net total change is:



We all know that for there to be a balance ;loss of gravitational potential energy must be equal to the gain in kinetic energy .
SO;
K.E = 



v = 
Thus, the speed of 0.10 sphere when it is moved to 0.20 kg to the left is : 