Laws of motion
roblem?
5.5) a constsnt retarding force of 50N is applied to a body of mass 20kg. moving initially with a speed of 15m/s.How long does the body take to stop?
5.6)a constant force acting on a body of mass 3kg changes its speed from 2m/s to 3.5 m/s in 25s.The direction of motion of the body remains unchanged.What is the magnitude and direction of the force?
5.7)a body of mass 5kg is accted upon by two perpendicular force4s 8N and 6N.Give the magnitude and direction of the acceleration of the body?
5.9)a rocket with a lift of mass 20000kg is blasted upwards with an initial acceleration of 5m/s^2.Calculate the initial force of the blast?
5.11)a truck starts from rest and accelerates uniformly at 2m/s^2.At t=10s,a stone is dropped by a person standing on the top of the truck(6m high from ground).What are the velocity and acceleration of the stone at t=11s?
roblem?5.5) a constsnt retarding force of 50N is applied to a body of mass 20kg. moving initially with a speed of 15m/s.How long does the body take to stop?
5.6)a constant force acting on a body of mass 3kg changes its speed from 2m/s to 3.5 m/s in 25s.The direction of motion of the body remains unchanged.What is the magnitude and direction of the force?
5.7)a body of mass 5kg is accted upon by two perpendicular force4s 8N and 6N.Give the magnitude and direction of the acceleration of the body?
5.9)a rocket with a lift of mass 20000kg is blasted upwards with an initial acceleration of 5m/s^2.Calculate the initial force of the blast?
5.11)a truck starts from rest and accelerates uniformly at 2m/s^2.At t=10s,a stone is dropped by a person standing on the top of the truck(6m high from ground).What are the velocity and acceleration of the stone at t=11s?