Question

Calculate the moving energy
m=300kg
v=90km/h
Em=?

Answer 1

Em or Ek =1/2m*v^2

=1/2*300*8100
=1,215,000J

Answer 2

To calculate the moving energy, we can use the formula:

Em = (1/2) * m * v^2

where: m = mass of the object v = velocity of the object

First, we need to convert the velocity from kilometers per hour (km/h) to meters per second (m/s), since the formula requires the velocity to be in m/s:

v = 90 km/h = 25 m/s (approximately, since 1 km/h = 0.27777778 m/s)

Now, we can plug in the values into the formula:

Em = (1/2) * m * v^2 Em = (1/2) * 300 kg * (25 m/s)^2 Em = 281,250 J

Therefore, the moving energy of the object is approximately 281,250 Joules.