What is supersonic speed?.

The speeds of ten particles are ( in m//s ) 6.00, 5.00, 8.00, 10.0, 10.0, 14.0, 14.0, 18.0, and 20.0 m//s (i) What is the average speed, (ii) What is the rms speed and (iii) What is the most probable speed of the particles?

A passenger train takes 3 hours less for a journey of 360 km, if its speed is increased by 10 km/hr from its usual speed. What is the usual speed?

A shell of mass 0.01 kg fired by a gun of mass 10 kg. If the muzzle speed of the shell is 50 ms^(-1) , what is the recoil speed of the gun?

A shell of mass 0.02 kg is fird by a gun of mass 10 kg. If the muzzle speed of the shell is 600 ms^(-1) , what is the recoil speed of the gun?

An object is moving in a circle of radius 100 m with a constant speed of 31.4 m//s . What is its average speed for one complete revolution

An object travels 20 m in 10 s. What is the average speed of the object ?

A car is going in south with a speed of 5m//s . To a man sitting in car a bus appears to move towards west with a speed of 2sqrt(6)m//s . What is the actual speed of the bus?

A rocket is fired with a speed v = 2 sqrt (gR) near the earth's surface and directed upward, what is intersteller speed of rocket v^' , where v_e escape speed on the surface of earth

An insect trapped in a circular groove of radius, 12 cm moves along the groove steadily and completes 7 revolutions in 100s. What is the angular speed and the linear speed of the motion ? What is the magnitude of the centripetal acceleration in above problem ?