A car traveling at a speed of 18m/s loses its brake and falls into a 60-m cliff. Fill in the unknown quantities. Initial velocity

Time for the car to hit the ground

How far from the foot of the cliff will the car reach?

Explanation:

Initial velocity is 18 m/s horizontal.

Time for the car to hit the ground.

t = √(2h/g) = √(2(60) / 9.8) = 3.5 s

The car will land 3.5(18) = 63 m from the base of the cliff.

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles

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.