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

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2