Question

An object has a velocity of 8 m/s and a kinetic energy of 480 J. What is the mass of the object?

Answer 1

Kinetic energy =1/2mv^2

so

1/2m×8×8=480

m. = 15kg

hence mass will be 15kh

Answer 2

Answer:

Mass= 15 kg

Explanation:

Given e= 480J, v=8m/s, mass?

So KE= 1/2*mv^2

480= 0.5 x m x 8^2

480 = 64m/2

480x2 = 64m

960 = 64m

m = 960/64

So m= 15 kg