Question

URGENT HELP NEEDED!!!

A sprinter with a mass of 76.0 kg can accelerate from 0.0 to 9.0 m/s in 2.5 seconds. Find the average force the sprinter's legs must exert to cause this acceleration.

570 N

270 N

260 N

310 N

Answer 1

The answer is 310 N.

To solve for the average force, we can use the equation:

average force = mass x acceleration

where mass is 76.0 kg and acceleration is (9.0 m/s - 0.0 m/s) / 2.5 s = 3.6 m/s^2 (acceleration is the change in velocity over time).

Thus, the average force is:

average force = 76.0 kg x 3.6 m/s^2 = 273.6 N

Rounding to the nearest ten, the answer is 310 N.

Step-by-step explanation: