An engineer is setting a speed limit on a road. She wants a car to be able to stop in 147ft and knows that the maximum rate at which a car can safely
brake is 20.0ft/s?
What initial speed (in given units) will allow the car to come a stop at the stop
sign when braking with this acceleration?
mph
Could a car traveling 60mph come to a stop before the stop sign?
chock

  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is

1.195000

explanation:

total mass=0.0117+0.0137+0.0881+0.0111

total mass= 0.01172kg

total velocity = 0.283-0.743+0.871-0.799+0.155+0.637+0.301=0.102

momentum=mv=0.1172*0.102=1.195000//