To test the performance of its tires, a car travels along a perfectly flat (no banking) circular track of radius 151 m. The car increases
its speed at uniform rate of
at ≡
d |v|
dt = 2.51 m/s
2
until the tires start to skid.
If the tires start to skid when the car reaches
a speed of 25.9 m/s, what is the coefficient of
static friction between the tires and the road? The acceleration of gravity is 9.8 m/s
2
.

explanation:

newton's third law, for every action there is an equal and opposite reaction.

another example of kinetic energy would be,

kinetic energy   >     moving energy

answer   >   letter choice (c),   a hammer falling off a table.

hope that !                                         : )

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.