What is true of potential energy? select all that apply

a. it is described as stored energy

b. it can be observed in a puppy sitting in on a chair. not moving.

c. it is found in batteries, springs, a ball being held above the ground.

d. it’s symbols are PE

20. threshold braking in the vehicle's braking system occurs when a. the brake pedal is pushed, heel on floorboard, with full foot pressure. b. the brakes are exerting full braking power, without traction loss. c. the driver begins pushing down the brake pedal, with moderate slowdown. d. the brakes just begin to take hold with a gradual slowdown.

This is one type of line graph in which the independent variable is time plotted on the x axis and the dependent variable, also numerical, is plotted on the y axis.

While the change in blank will remain the same during a collision, the force needed to bring an object to a stop can be blank if the time if collision is blank