Question

82. An athelete
Humming on a circular path
radius 35m
completes each Hound in 4
thirutes Calculate this speed and seelocity
at the end of 10 mins?​

Answer 1

Answer:

Speed = 0.9166... m/s --(end of 10 minutes)

Velocity = 0.11...m/s --(end of 10 minutes)

Explanation:

Question correction:

An athlete running on a circular path of radius 35 metres completes each round in 4 minutes , calculate his speed and velocity

Given:

• Radius of the circular path = 35 metres
• Each round completion time = 4 minutes

To find:

• Speed and velocity at the end of 10 minutes

No. of rounds completed = $\frac{Total \ time}{Each \ round \ completion \ time}$

No. of rounds completed = $\frac{10}{4}$

No. of rounds completed = 2.5 rounds

Speed = $\frac{Distance }{Time}$

Distance covered in covering 2.5 rounds = $2.5 \times 2 \times \pi \times 35$

Distance covered in covering 2.5 rounds = 550 metres

The distance covered by the athlete is 550 metres

Time = 10×60= 600 seconds

Speed = $\frac{550}{600}$

Speed = 0.9166... m/s

Displacement at the end of 2.5 rounds will be equal to the diameter

Diameter = 2×35 = 70 metres

Velcoity = $\frac{70}{600}$

Velocity = 0.1166... m/s