A0.05-kg car starts from rest at a height of 0.95 m. assuming no friction, what is the kinetic energy of the car when it reaches the bottom of the hill? (assume g = 9.81 m/s2.)

0.466 J

Explanation:

We are given that

Mass of car=m=0.05 kg

Initial velocity of care,u=0

Height of car from the bottom of hill=h=0.95 m

Potential energy of car=

Using the formula

Potential energy of car=

Loss of potential energy=Kinetic energy

Kinetic energy of the car when it reaches the bottom of the hill=0.466 J

hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )

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information: because weak acids/bases have low concentration of hydrogen ions, the addition of water has a large impact on the ph. 2. a difference in 1 unit is a 10x difference in concentration for example; a liquid with ph of 3 is 10x more acidic than a liquid with a ph of 4. therefore, a liquid with a ph of 3 is stronger.

best of luck!