A parked car begins to roll down a hill, what can you conclude from that observation?
1 answer:
Answer:
its The rolling friction is greater than the force of the car’s weight against the hill.
and A force was required to start the car rolling.
Explanation:
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- Mass=m=142kg
- Acceleration=a=30m/s
- Force=F
Using Newton's second law
Answer: 16.22 m/s^2
Explanation: g= GM/r^2 G= (6.67x 10^-11) M= 1.66(6x 10^24) r=(6400x 10^3) so
((6.67x10^-11)(1.66x 6x 10^24))/ (6400x10^3)^2 = 16.22 m/s^2
' A ' and ' D ' are both correct statements.
Answer:
A
Explanation:
i think the answer is A
