The motion of a very massive object can be minimally affected by what would seem to be a substantial force. consider a supermarket, with a mass of 3.2 x 10^8 kg. suppose you strapped two jet engines (thrust force of a small jet engine is 5 n) onto the sides of the tanker. ignoring the drag of the water (which, in reality, is not a very good approximation), how long will it take the tanker, starting from rest, to reach a typical crushing speed of 6.0 m/s?

5.3 hours

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

a = Acceleration

m = Mass

Force

The force generated by the jet engines is 100000 N

From Newton's Second law

Equation of motion

It will take 5.3 hours to reach a speed of 6 m/s

i believe the answer is a

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.