Answer:
98J
Explanation:
Given that the mass of the rock m=1kg, the height =10m and we know that gravitational force is 
.
Change in kinetic energy happens when the initial potential energy at rest is converted into Kinetic energy as:
Hence, the change in kinetic energy of the rock is 98J
Answer:
c
Explanation:
your welcome dude good luck
Answer:
Hey
Say that there was no light on in the building that they were ch,at,tin,g in, then they could hear each other but not see each other.
Answer:
1. Can change the state of an object(rest to motion/ motion to rest)
2. May change the speed of an object if it is already moving.
3. May change the direction of motion of an object.
Explanation: A force acting on an object causes the object to change its shape or size, to start moving, to stop moving, to accelerate or decelerate.
Number 4 I think
the atomic mass is 11 because the mass is the sum of protons and neutrons
