The fastest server in the women’s game is Venus Williams of the United States of America, who recorded a serve of 205 km/hr during a match in Switzerland in 1998. Calculate the ball’s momentum if it has a mass of 58 g.

by Manoj Jaiswar ( PMJ Sir ) October 31, 2022

Given data here are, velocity , v= 205 km/ hr = 205 x 1000/ 3600 m/s v = 2050/36 m/s…

The fastest tennis service by a man is 246.2 km/hr by Andy Roddick of the United States of America during a match in London in 2004. Calculate the ball’s momentum if it has a mass of 58 g.

by Manoj Jaiswar ( PMJ Sir ) October 31, 2022

Given data here are, velocity , v= 246.2 km/ hr = 246.2 x 1000/ 3600 m/s v = 2462/36 m…

The fastest recorded delivery for a cricket ball is 161.3 km/hr , bowled by Shoaib Akhtar of Pakistan during a match against England in the 2003 Cricket World Cup, held in South Africa. Calculate the ball’s momentum if it has a mass of 160 g.

by Manoj Jaiswar ( PMJ Sir ) October 31, 2022

Given data here are, velocity , v= 161.3 km/ hr = 161.3 x 1000/ 3600 m/s v = 1613/36 …

A soccer ball of mass 420 g is kicked at 20 m/s towards the goal post. Calculate the momentum of the ball.

by Manoj Jaiswar ( PMJ Sir ) October 31, 2022

Given data here are mass, m= 420g = 0.420 kg velocity , v= 20m/s  therefore momentum …

A bus reaches the destination in fixed time, running at a speed of 60 km/h. If the speed of the bus is reduced by 12 km/h, it takes 1 hour more to reach the destination. What was the distance covered by the bus?

by Manoj Jaiswar ( PMJ Sir ) October 26, 2022

As per the given question let us find what is given over here Let the distance covered…

Rohit misses his school bus and asks his father to drop him to school in his car. If his school is 10 km away and he has to reach there in exactly 15 minutes, at what speed (in km/hr) should his father drive?

by Manoj Jaiswar ( PMJ Sir ) October 26, 2022

As per the given situation in the question above, we have distance = 10km time = 15 …

A set of 8 tuning forks is arranged in a series of increasing order of frequencies. Each fork gives 4 beats per second with the next one and the frequency of last fork is twice that of the first. Calculate the frequencies of the first and the last fork.

by Manoj Jaiswar ( PMJ Sir ) October 24, 2022

Three particles of mass m each are placed at three corners of an equilateral triangle of side a. The work, which should be done on this system to increase the sides of the triangle to 2a, is:

by Manoj Jaiswar ( PMJ Sir ) October 04, 2022