What is supersonioc speed?

What is speed?

What is nonuniform speed?

What is the ratio of speed of IR rays and UV rays in vacuum?

What is the ratio of speed of infra-red rays and ultraviolet rays in vaccum?

What is uniform speed?

A shell of mass 0.020 kg is fired by a gun of mass 100 kg. If the muzzle speed of the shell is 80 m s-1, what is the recoil speed of the gun?

A car covers first half of the distance between two places at a speed of 40 km/hr and the second half at 60 km/hr. What is the average speed of the car?

A man walks on a straight road from his home to a market 2.5 km away with a speed of 5 km h ^-1 . Finding the market closed, he instantly turns and walks back home with a speed of 7.5 km h^-1 . What is the average speed of the man over the interval of time (i) 0 to 30 min, (ii) 0 to 50 min, (Hi) 0 to 40. min? [Note: You will appreciate from this exercise why . it is better to define average speed as total path length divided by time, and not as magnitude of average velocity. You would not like to tell the tired man on his return home that his average speed was zero!]

What is the wrong with the speed time graph from

What happens to speed, velocity acceleration when an object moves in a circle with uniform speed?