N E
25.0 m
3
s
A car goes around the track as shown above, with a velocity of 10 m/s. The frictional force (which supplies
the centripetal force) is 3000 N.
The mass of the car must be kg.
If the maximum coeffecient of friction is 0.92, what is the maximum speed the car can then drive without
skidding?
m/s
Word Bank:
9.8
9.2
750
15
10
500 12 300
18 20

answer: option c.

explanation:

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.

the ima (higher than 1m) will be greater than the ima with the height of 1m.