What is nonuniform speed?

What is uniform speed?

What is supersonioc speed?

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

What is the apparent weight of a man of mass 60 kg who is standing on a lift which is moving up with a uniform speed?

A train travels a distance 300km at a uniform speed.If the speed of the train is increased by 5km an hour,The journey would have taken to two hours less.Find the original speed of the train.

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?

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-stone of mass 0.25 kg tied to the end of a string is whirled round in a circle of radius 1.5 m with a speed of 40 rev./min in a horizontal plane. What is the tension in the string? What is the maximum speed with which the stone can be whirled around if the string can withstand a maximum tension of 200. N?

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!]