PART - 1 CH - 2 Motion in a Straight Line — Physics STD 11 Science — Question

An object having a velocity 4.0m/s is accelerated at the rate of 1.2m/s² for 5.0s. Find the distance travelled during the period of acceleration.

On what does the pressure of a liquid depend?

A closed box is filled with gas and the box is initially at rest. What will be the effect on the motion of the gas molecules and the motion of the center of mass of the box in mutual collision?

It is easier to pull lawn roller than to push it. Why?

What would happen to an artificial satellite, if its orbital velocity is slightly decreased due to some defects in it?

On what factor does the coefficient of friction between two surfaces depend?

In a flywheel, most of the mass is concentrated at the rim. Explain why?

What will be the effect on the time period if a gold sphere of the same size is used instead of an iron sphere in a simple pendulum?

A passenger arriving in a new town wishes to go from the station to a hotel located 10km away on a straight road from the station. A dishonest cabman takes him along a circuitous path 23km long and reaches the hotel in 28 min. What is (a) the average speed of the taxi, (b) the magnitude of average velocity? Are the two equal?

A spring of force constant k is broken into n equal parts (n > 0). What will be the spring factor of each part?