Answer: They create antibodies.
Answer:
c)
Explanation:
A collision is said to be elastic when the total kinetic energy is the same after the collision. The speed of objects that are stuck together will always be less than the initial speed of the object that was in motion given that the other particle was at rest. It is because the kinetic energy of the system was due to the moving object. The objects have a greater overall mass when they are stuck. If the kinetic energy is the same and the mass increases, the velocity must decrease.
Answer:
Explanation:
The first part of question is about the height of the rock from which it falls and hit the ground with speed of 11 m/s. Lets find out that height.
We will use the formula,
As the initial velocity of the rock was zero.
Now we have to find the height from which the rock should be dropped and it's speed on hitting the ground should be 22 m/s.
Again we will use the same formula, same calculation but the value of velocity now should be 22 m/s.
I Think The answer is b I hope it helps My friend Message Me if I’m wrong and I’ll change My answer and fix it for you
Fnet = mass × acceleration
Fpush (force by the boys) - 40 = (30)(1.5)
Fpush - 40 = 45
Fpush = 45 + 40
Fpush = 85 N
So, the boys are exerting a force of 85 N on the bicycle.