Calculate the average speed of "Ussain Bolt" who sprints 100m in 9.81 sec. during 2016 Rio Olympics to win Gold medal.

What is the average speed of a Cheetah that sprints 100m in 4 sec ? What if it sprints 50 m in 2 sec ?

What is the average speed of a Cheetah that sprints 100m in 4sec. ? What if it sprints 50m in 2sec? (25 m/s) ( AS_(7))

What is the average speed of a Cheetah that sprints 100m in 4sec. ? What if it sprints 50m in 2sec? (25 m/s) ( AS_(7))

What is the average speed of a Cheetah that sprints 100m in 4sec. ? What if it sprints 50m in 2sec? (25 m/s) ( AS_(7))

In which sport did India win Bronze medal at Rio Olympics 2016?

Fig. 2.38 shows the displacement of a body at different times. (a) Calculate the velocity of the body as it moves for time interval (i) 0 to 5 s, (ii) 5 s to 7 S and (iii) 7 s to 9 s. (b) Calculate the average velocity during the time interval 5 s to 9 s. [Hint : From 5 s to 9 s, displacement = 7 m - 3 m = 4 m ]

During a heavy rain hailstones of average size 1.0 cm in diameter fall with an average speed of 20 m/s. Suppose 2000 hailstones strike every square meter of a 10mxx10m roof perpendicularly in one second and assume that the hailstones do not rebound. Calculate the average force exerted by the falling hailstones on the roof. Density of a hailstone is 900 kg/m^3

During a heavy rain hailstones of average size 1.0 cm in diameter fall with an average speed of 20 m/s. Suppose 2000 hailstones strike every square meter of a 10mxx10m roof perpendicularly in one second and assume that the hailstones do not rebound. Calculate the average force exerted by the falling hailstones on the roof. Density of a hailstone is 900 kg/m^3

During a heavy rain hailstones of average size 1.0 cm in diameter fall with an average speed of 20 m/s. Suppose 2000 hailstones strike every square meter of a 10mxx10m roof perpendicularly in one second and assume that the hailstones do not rebound. Calculate the average force exerted by the falling hailstones on the roof. Density of a hailstone is 900 (kg)/m^3