Class 9 Force and Laws of Motion Important Questions

Force and Laws of Motion Important Questions Using second law of motion, derive the relation between force & acceleration. A bullet of 10 g strikes a sand-bag at a speed of 1000 m/s & gets embedded after travelling 5 cm. Calculate : the resistive force exerted by the sand on the bullet the time taken […]

Class 9 Force and Laws of Motion Notes

Force and Laws of Motion Notes Force:- A push or pull on an object is called force. A force can change- the state of motion of an object i.e, motion to rest or, rest to motion. the speed of the object the direction of motion the shape of the object Contact Force:- The force exerted […]