Motion in one dimension – Multiple Choice Questions (MCQ):In this post, we are presenting an awesome set of MCQs on Motion in one dimension. These multiple-choice questions will make you confident enough about this chapter, provided you try this MCQ paper to test your understanding. We found this set on the internet and thought to […]
This page presents a set of Force and Laws of Motion class 9 Numericals. We have used linear motion equations and force equations to solve these numerical problems.
In this post we will solve harder numerical problems on Vertical motion physics. vertical motion is an interesting chapter in mechanics . Here you get selected problems to solve which will help you to test your understanding.
49) A hammer exerts a force of 1·5 N on each of the two nails A and B. The area of cross section of tip of nail A is 2 mm^2 while that of nail B is 6 mm^2. Calculate pressure on each nail in pascal. Solution Nail A Force F = 1.5 N Area […]
solution of 5 numericals from Q set 1 for class 9. Motion under gravity is the primary focus of the following problems. Upward and downward movement, maximum height reached, time to reach the maximum height, velocity just before touching the ground etc are the touched upon points of these sort of numerical problems in physics. […]
Problem Statement An engineer is designing the runway for an airport. Of the planes that will use the airport, the lowest acceleration rate is likely to be 3 m/s2. The takeoff speed for this plane will be 65 m/s. Assuming this minimum acceleration, what is the minimum allowed length for the runway? Solution U = […]
Problem Statement A car traveling at 20 m/s skids to a stop in 3 s. Determine the skidding distance of the car (assume uniform acceleration). Solution U = 20 m/s V = 0 t = 3 s Now S = ? We will use, V2 = U2 – 2 a S As V is zero, […]
Problem Statement A bullet of mass 50 g moving with an initial velocity of 100 m/s, strikes a wooden block and comes to rest after penetrating a distance 2 cm in it. Calculate: (i) Initial momentum of the bullet (ii)final momentum of the bullet (iii) retardation caused by the wooden block, and (iv) resistive force […]
Problem statement A force causes an acceleration of 10 m/s^2 in a body of mass 500 g. What acceleration would be caused by the same force in a body of mass 5 kg. Solution Case 1 mass = m=500 g = 0.5 kg Acceleration = a =10 m/s^2 Force = ma = 0.5 . 10 […]
Problem Statement A body of mass 500 g, initially at rest, is acted upon by a force which causes it to move a distance of 4 m in 2 sec. Calculate the force applied. Solution: mass=m = 500 g = 0.5 kg Initial velocity = u = 0 Distance travelled = s=4 m Time duration […]
Problem Statement A cricket ball of mass 100 g moving at a speed of 30 m/s is brought to rest by a player in 0.03 s. find the average force applied by the player. Solution: mass =m= 100 g = 100/1000 kg = 0.1 kg initial velocity = u=30 m/s Final velocity = v=0 Time […]
Problem Statement A force acts for 0.1 sec on a body of mass 2 kg initially at rest. The force is then withdrawn and the body moves with a velocity of 2 m/s. Find the magnitude of the force. Solution of class 9 Set1 Q12 Solution: A force acts on a body for 0.1 sec. […]
Problem Statement A force acts for 10 s on a stationary body of mass 100 kg after which the force ceases to act. The body moves through a distance of 100 m in the next 5 s. Calculate (i) the velocity acquired by the body, (ii) the acceleration produced by the force, and (iii) the […]
The velocity-time graph is defined as a graphical representation of the velocity of a body in motion with respect to time. Generally, velocity is assigned to the y-axis, and time is pointed on the x-axis. This graph type is also written as a v-t graph or velocity-time graph. The diagram below depicts a few velocity-time […]
Here are a few post links on fundamental mechanics which we have posted in last few weeks. Friction Definition Newton’s Second law Newton’s laws and a few application case studies pseudo force Numerical problems for class 9 / Physics problems class 9 Physics problems on Pseudo Force […]
Physics problems with pseudo force with solutions- these problems are going to be related to the noninertial frame of reference. Let’s solve an interesting numerical. A smooth inclined plane with an angle of inclination 30 o is moving with a constant acceleration a (as shown in the figure). When a block is placed on the […]