Gymnasts often practice on foam floors, which increase the collision time when a gymnast falls. What effect does this have on collisions
The effect of the gymnast on the collision will increase. An elastic collision is when two bodies collide and separates after collision conserving the total kinetic energy before and after collision.
Answer:
it increces the time of the fall
Explanation:
b) False
Answer:
b)False
Explanation:
This is the false statement .The two forces in each pair could not have different physical origins.
The two pair of forces have same origin.It can not be possible that one is electric force and other one is gravity force or friction force.
We know that magnitude of electric force is much smaller than the friction force .So they can not be in pair form.
Answer is b) False
b. the perfect cosmological principle
c. the oscillating universe theory
d. the steady state theory
Answer: b. the perfect cosmological principle
Explanation:
The perfect cosmological principle is the extension of the cosmological principle. It states that the universe is homogeneous. It looks same from everywhere. It will look the same. It will never change over time instead of some of the gross changes occurring in the universe.
Answer:
A
Explanation:
at the same instant means in the same moment, same time thus A and B share the same starting time which is t=0
two heavy bags of groceries upstairs to your
kitchen. Will you do more work on the bags if
you carry them up one at a time? Explain.
Answer:
no both remains same...
Explanation:
because the work done is given by the product of the both the masses added (m+m) Displacement
and second time when you carry the bags individually it comes out to be the same m×displacement + m×displacement
Explanation:
Potential Energy = mg h mg = 240 N
80 = 240 h
h = 80 / 240 = 1/3 meter ( 33.3 cm)