## A squirrel when jumps down a tree remains unhurt

Question 2: Why can squirrel jump from a tree branch to the ground and run away undamaged while a human could break a bone in…

## Relation of terminal velocity and mass of the object

Question 1: From the top of a tall building, you drop two table tennis balls, one filled with air and the other with water. Which…

## Conceptual Questions, Fluid Dynamics

Conceptual Questions on Fluid Dynamics (new course) See here solved conceptual questions on Fluid Dynamics (Physics) included in the course for grade 11. S.NoDescription of…

## Numerical Problem 11, Work and Energy

Problem 11: The mass of moon is 1/80 of the mass of earth and the corresponding radius is 1/4 of the radius of earth. Calculate…

## Numerical Problem 10, Work and Energy

Problem 10: The engine of a JF-Thunder fighter develops a thurst of 3000 N. What horsepower does it at a velocity of 600 m/s. Solution…

## Numerical Problem 9, Work and Energy

Problem 9: A body of mass m drops from bridge into water of the river. The bridge is 10 m high from the water surface.(a)…

## Numerical Problem 8, Work and Energy (new course)

Problem 8: An object of mass 1000 g falls from a height of 30 m on the sand below. If it penetrates 4 cm into…

## Numerical Problem 7, Work and Energy (new course)

Problem 7: A ball of mass 100 grams is thrown vertically upward at a speed of 25 ms-1. If no energy is lost, determine the…

## Numerical Problem 6, Work and Energy

Problem 6: To what height can a 400 w engine lift a 100 kg mass in 3 s? Solution GivenPower of the engine, P =…

## Numerical Problem 5, Work and Energy (new course)

Problem 5: A man whose mass is 70 kg walks up to the third floor of a building which is 12 m above the ground…