E a and c padded dashboards in cars are safer in an

(e) A and C
Padded dashboards in cars are safer in an accident than nonpadded ones because
an occupant hitting the dash has
(a) increased time of impact (b) decreased impulse
(c) decreased impact force (d) A and B (e) A and C
(c) 12 kg m/s

A 4 kg ball has a speed of 3 m/s. What is the ball's momentum?
(a) power
A job is done slowly, while an idenitical job is done quickly. Both jobs require the
same amount of work, but different amounts of
(b) twice as much potential energy
When an object is raised above the ground it gains a certain amount of potential
energy. If the same object is raised twice as high it gains
(d) moving
An object that has kinetic energy must be
(a) at rest (b) at an elevated position (c) falling
(d) moving (e) none