A2.53 kg particle has a velocity of vx = 6.8 m/s and vy = 7.21 m/s. find the magnitude of its total momentum. answer in units of kg · m/s.

25.05 kg m/s

Explanation:

mass, m = 2.53 m/s

vx = 6.8 m/s

vy = 7.21 m/s

Resultant velocity,

v = 9.9 m/s

Momentum, p = mass x velocity

p = 2.53 x 9.9

p = 25.05 kg m /s

because growing process had stoped after 4-5 year

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.