HELP EASY PHYSICS QUESTION 1.A ball at rest is dropped from the top of an inclined plane at a height of 50 cm. What is the speed of the ball when it reaches the bottom of the plane? a.3.13 m/s b.4.9 m/s c.9.8 m/s d.31.3 m/s 2. A 25 kg crate is moved through a distance of 4 m by a horizontal force of 60 N. What is the work done by the frictional force in moving the crate if the coefficient of kinetic friction is 0.2? a.240 J b.-240 J c.-196 J d.196 J

it takes about 30 days for it to break down

be subject to a force andchange its motion

continuous conducting path for current, power supply

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.