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Direction of velocity and acceleration
Is it possible that the velocity and the acceleration of a body point in opposite directions? if yes then why? if no then why? Answer: Yes. It is possible for the direction of acceleration to be...
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Passenger in a moving train
A passenger in a moving train tossed a coin which falls behind him .State the type of motion of the train ? Answer: The train is in accelerated motion. Explanation If the train were moving with uniform...
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Numerical Problems from Kinematics
1. A stone is thrown in a vertically upward direction with a velocity of 5 m s-1. If the acceleration of the stone during its motion is 10 m s–2 in the downward direction, what will be the height...
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Physics Numerical Problems posted by Nabeela
The following questions were posted by Nabeela. We are just posting the question as such so that the visitors can post the answers. A mass-less string pulls a mass of 20kg upward against gravity. The...
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Physics Numerical Problem
A small mass of 10 KG is suspended from a spring balance. It is Pulled by Horizontal Spring so it makes 60º with the vertical. Find the new reading of the spring balance. Related articles Physics...
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Physics Numerical
If a stone is dropped from the edge of roof and passes by a window of height 2m in 0.1 second. Calculate the height of roof above the window. Show with process. Related articles Physics Numerical...
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Angle between acceleration and velocity in projectile motion
What is the angle between the directions of acceleration and velocity at the highest point of projectile? Answer: At the highest point of a projectile, the vertical component of velocity is zero and...
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A Complicated problem from force and motion
A particle is at rest. A force F is continuously pushing it forward at all velocities it attains till infinite time say till n seconds where n tends to infinity find the final relation for velocity,...
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Questions waiting for answers here!
If energy is mass-less then why does it cause linear momentum? one object is thrown upward with velocity v from height h and another object is thrown downward with same velocity v and other object is...
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Aerodynamics
Buoyant force concept and terminal velocity? My aerodynamics book(John Anderson Aerodynamics) say that whenever a body moves through a fluid, there are only two types of forces acting on the body. 1....
View ArticleAverage velocity
Is average velocity equals to (initial +final velocity)/2 Asked Ishita Answer: Not always. The average velocity =(initial velocity +final velocity)/2; only if the body is undergoing uniform...
View ArticleCurrent Electricity – Drift Velocity based numerical
Two different wires X and Y of same diameter but different materials are joined together in series across a battery . If the number density of electrons in X is twice that in Y . Find ratio of...
View ArticleProjectile Motion – Numerical Problems (Assignment for KV Pattom Class XI...
The students are requested to start solving these numerical problems. More questions will be added till 8 pm on 13/09/2014. There will be more than 20 questions in all. All students are expected to...
View ArticleNumericals from Newton’s Laws of motion based on F=ma (For calss XI students...
Download the questions and solve them and submit on or before 9 Oct 2014 A force acts for 10 s on a body of mass 10 kg after which the force ceases and the body describes 50 m in the next 5 s. Find the...
View ArticleNumericals from Newton’s Laws of motion based on F=ma (For calss XI students...
Download the questions and solve them and submit on or before 9 Oct 2014 A force acts for 10 s on a body of mass 10 kg after which the force ceases and the body describes 50 m in the next 5 s. Find the...
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