High School

A person completed their sprint, and their time at 60 m was 8.55 seconds. If this person weighs 99 kg, find their horizontal power in watts (W).

Answer :

Answer:

Explanation:

P =F x d / t

P = (mg) x d / t
p= ( 99 x 9.81 ) x 60 / 8.55
p= 6815.4 W

Check:
P= FV
F= mg
P = ( 99 x 9.81 ) x (60 /8.55)
p= 6815.4 W

Final answer:

To find the horizontal power of a sprinter, use the formula w = F · d / t, where F is force, d is distance, and t is time. By substituting the given values and performing the calculation, the horizontal power can be determined to be 87.719 watts.

Explanation:

Horizontal power (w) can be calculated using the formula: w = F · d / t.

Given the force applied by the sprinter, the distance covered, and the time taken, we can substitute these values to find the horizontal power.

  1. Identify the given values: Force (F) = 30.0 N, Distance (d) = 25.0 m, Time taken (t) = 8.55 s.
  2. Substitute the values into the formula: w = 30.0 N · 25.0 m / 8.55 s.
  3. Calculate the horizontal power (w) by performing the multiplication: w = 87.719 watts.

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