Sher Singh was a 12 year old brave boy; who lived in Laldwani village. He lived with his younger brother, mother and father. Sher Singh Bahadur was father of Sher Singh. Sher Sing’s younger brother’s name was Kunwar. He was Read more
Walking at 3/5 of his usual speed, a man is 4 hours too late. Find his usual time. Suppose the usual speed of the man be x km/hr .Let distance travelled be D km Therefore usual Time taken = D Read more
Problem : A body moves from rest with uniform acceleration and travels 270 metre in 3 seconds. Find the velocity of the body at 10 seconds after the start. Initial velocity (u)= 0Distance(s) = 270m Time taken (t)=3s final velocity Read more
Problem : When brakes are applied to a bus the retardation produced is 25 centimetre per second square (cm/s2 )and the bus takes 20 seconds to stop. Calculate a)the initial velocity of bus b) the distance traveled by bus during Read more
Problem: A car travels a distance 100 metre with a constant acceleration and average velocity of 20 metre per second. The final velocity required by the car is 25 metre per second. Find 1) the initial velocity and 2) Read more
ABCD is a square and APB is an equilateral triangle. Prove in each case: 1) 𢁪PD ≅ 𢁫PC 2) Find the angles of 𢁭PC Solution : First PartGiven �P = Equilateral triangleR.T.P.1) 𢁪PD ≅ 𢁫PC 2) Find 𢈍PC, Read more
Three sums of speed distance and time are discussed in the video. The sums are given here. 1. A train 150 m long passes a telegrah post in 15 seconds.Find:a) Speed of the train in km/hr. b) Time Read more
In this video sums related to relative speed of boat in standstill water stream and in a water stream having speed in the same direction and also in the opposite direction have been discussed. Watch the video and comment below. Read more
Theorem :Tangent and radius of a circle are perpendicular to each other. Solution : Given: A circle with centre O. AB is the tangent to the circle at point B and OB is the radius of the circle.R.T.P. OB ⊥ Read more
Theorem: The angle in a semicircle is a right angle Given : A circle with centre 0 with � at centre and � at the circumference of the circle . RT.P. : the angle in a semicircle is a right Read more
