Question

A scientist is studying the biomechanism of the human body. he determines the velocity of an experimental subject while he runs along a straight line at a constant rate. the scientist starts the stopwatch at the moment the runner possesses a given point and stops it after the runner has passed another point 20 meters away. the time interval indicated on the stopwatch is 4.0 seconds.

what is the runner velocity?

Answer 1

The velocity of a runner who covers a distance of 20 meters in 4.0 seconds is calculated using the formula velocity equals distance divided by time (v = d/t), resulting in a velocity of 5 m/s.

Step-by-step explanation:

The student is asking about the velocity of a runner who is moving along a straight path with a constant speed, which is a question of physics, specifically related to kinematics. To calculate the velocity of the runner, we use the simple formula: velocity equals distance divided by time (v = d/t). Here, the distance (d) is 20 meters, and the time (t) is 4.0 seconds.

To find the runner's velocity, we divide 20 meters by 4.0 seconds, which gives us a velocity of 5 meters per second (m/s). Therefore, the runner's velocity is 5 m/s. This is a typical high school-level physics problem that requires understanding of the relationship between velocity, distance, and time.