Answer:
The pull or push which changes or tends to change the position of an object from rest to motion or motion to rest is known as force.
Its SI unit is newton(n).
Answer:
Part a)
Part b)
Part c)
Part d)
Part e)
Part f)
Explanation:
Part a)
As we know that the maximum angle deflected by the pendulum is
so the maximum height reached by the pendulum is given as
so we will have
now gravitational potential energy of the pendulum is given as
Part b)
As we know that there is no energy loss while moving upwards after being stuck
so here we can use mechanical energy conservation law
so we have
Part c)
now by momentum conservation we can say
Part d)
Work done by the bullet is equal to the change in kinetic energy of the system
so we have
Part e)
recoil speed of the gun can be calculated by momentum conservation
so we will have
Part f)
Total energy released in the process of shooting of gun
The ability of a muscle to produce force in a single effort
The density differences in the ocean water are due to different salt concentration and differences in temperature. B) temperature
Answer:It can slow down, it can speed up and it can change its direction.
Explanation: