Speed Velocity and acceleration

Sir ir it true or false – “the speed of particle remains constant.this means that no unbalanced force acts on it.” (Purshkar  asks) Answer: If velocity remains constant, then we can say that no unbalanced force acts on it. If a body moves with uniform speed with its direction changing with time, as in the case [...]

Practice problems for class 9 SA1

Try to solve these problems, it will help you score good marks in Physics in first summative assessment. Calculate the force required to be imparted to a car to give it a velocity of 30 m/s in 10 s. The mass of the car is 1500 kg. For how long should a force of 200N … Continue reading Practice problems for class 9 SA1