Molly could increase her heart rate by turning around and jogging backwards, by jogging on her hands instead of her feet, or by continuing to jog normally but increasing the speed of the treadmill.
Answer:
<em>Explanation below</em>
Explanation:
<u>Friction Force</u>
When two objects are in contact, the surface between them exerts a frictional force as long as the objects are tried to move with respect to each other.
If a given external force is applied to the left, then a friction force appears to the right and opposes the intent to move them. A similar situation occurs when the force is applied to the right side.
If the object is at rest and no force is applied, no friction force appears.
It's important to recall that two different friction forces are defined: the kinetic friction force and the static friction force, usually the latter is greater than the first.
<span>Negative is attracted to positive. </span>
Well considering that car A is going twice as fast, than car B, it would most likely also take twice as long for car A to stop than for car B, so with that in mind, you would need twice as much distance.
