The correct answer here is B - the risk of musculoskeletal injury
increases with the total amount of physical activity. Whilst the other
forms of injury here do all relate to parts of the body involved in
physical activity, it is unlikely that these injuries would occur as a
direct result of exercise or strenuous physical activities if the
individual in quesiton was healthy to begin with.
#1). The horizontal speed doesn't change.
The vertical speed is accelerated by gravity.
a). Gravity increases the vertical speed by 9.8m/s every sec.
After 5 sec, the car is falling (5x9.8) = <em>49 m/s</em> vertically.
b). Horizontal: 49m/s ! Wow ! Almost 110 mph. No wonder he went off the cliff.
After 5 seconds, it's still <em>49 m/s</em>.
c). After 5 sec, the horizontal speed and vertical-down speed are both 49 m/s.
The combination results in a velocity that points 45 degrees down from horizontal,
and its magnitude is
square root of (49² + 49²) = 49 √2 = about <em>69.3 m/s</em> .
Progressive overload is the gradual increase in stress to which we subject the body during training, where time, intensity and frequency are dimensions of it.
<h3>What is progressive overload?</h3>
It is a training principle that emphasizes a progressive intensification of stress on the muscles.
It involves the systematic application of training stimuli that force the body to adapt and grow by manipulating the variables of frequency, time and intensity.
Therefore, we can conclude that progressive overload is the gradual increase in stress to which we subject the body during training, where time, intensity and frequency are dimensions of it.
Learn more about dimensions of progressive overload here: brainly.com/question/14614199
