True or false - usain bolt has perfect running technique when sprinting in the 100 m.
true
false

True.

Explanation:

You may have heard of Usain Bolt, who is not only a great athlete from Jamaica, but also the fastest man in the world. Being a record breaker and the winner of 100 and 200 meters.

Many believe that the technique that makes this athlete so fast is to move his legs at a higher speed than what is expected by an athlete. However, this is not the technique used by Bolt. The technique that he uses and that allows him to be faster than his opponents is to take long, strong strides while supporting his foot on the ground.

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s

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