Acollision is considered elastic except when

a. the objects have coupled together after the collision

b. the objects that collide don't get warmer

c. there is no lasting deformation

d. the objects don’t stick together

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.

Awheel of mass 48 kg is lifted to a height of 0.8 m. how much gravitational potential energy is added to the wheel? acceleration due to gravity is g = 9.8 m/s2. a. 30.4 j b. 3.1 j c. 297.9 j d. 11,321 j

A1.5m wire carries a 2 a current when a potential difference of 52 v is applied. what is the resistance of the wire?