Question

1 a force of 10 Newton acts on a body of mass 2 kg for 3 seconds, initially at rest calculate the velocity acquired by the body and calculate change in movement of the body
2 A4 size for 0.1 2nd on a body of mass 2 kg initially at rest the forces then withdrawn and the body of Moves with a velocity of 2m per second find the magnitude of the force
3 A bullet of mass 50 grams moving with an initial velocity 100 M per second strikes a wooden blocks and come to rest after penetrating a distance to centimetre in IT calculate initial Momentum calculate final momentum of the bullet calculate addition caused by the wooden block and calculus resistive force exerted by the wooden block
4 we require 10 Newton to accelerate an object at a rate of 2 metre per second power minus 2 find the mass of the object
5 A car starts from rest and Rolls down hill with constant acceleration it travels a distance of 400 m in 20 second find acceleration find the force acting on it if its mass is 7000 kg

Answer 1

First ans is 15 m/s as f=m/a
a= f/m
= 5m/s2
V/t= 5
V= 15m/s