Question

The mass of the object.

7. What is the Kinetic Energy of a 478 kg object that is moving with a speed of 15 m/s?
og o kinetic energy of 88 J and a mass of 45 kg, how fast is the object

Answer 1

Answer: 1) 53,775 J

2) 1.977 m/s

Step-by-step explanation:

Both question requires an equation Ek = 1/2mv^2

1) Since we know all the variable

1/2*478*(15)^2 = 53775 J

2) We do not know the velocity but we have the energy

88 = 1/2*45*v^2

v = 1.977 m/s