Particle is projected up at 10m/s from the top of a 120m hight tower taking g=10m/s a) time taken by it in reaches 120m .b) speed with which it hits the reaching ground ​

gas and liquid

we need to know the time interval during which the force acts. impulse of force = momentum change

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge