Basim's robotics team builds a robot that travels at 9 m/s and can fire a tennis ball at a target.
Which would result in a judge who is sitting beside the
testing ground observing the tennis ball having a
speed of 7 m/s?
The robot fires the ball forward with a speed of 7
m/s.
The robot fires the ball backward with a speed of 7
m/s.
The robot fires the ball backward with a speed of 2
m/s.
The robot fires the ball forward with a speed of 2
m/s.
No

i'm thinking more like energy

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.