Question

The roller coaster has a mass of 600 Kg speeds up to 22 m/s as it goes down a giant hill. Calculate the kinetic energy. SHOW WORK!

Answer 1

• 145.2 kJ

Explanation:

Kinetic Energy formula

• K.E. = 1/2mv², where :

1. m = mass
2. v = velocity

Substituting the given values

• K.E. = 1/2 x 600 x (22)²
• K.E. = 300 x 484
• K.E. = 145200 J
• K.E. = 145.2 kJ

Answer 2

145,200 J

Explanation:

• The formula to calculate kinetic energy is
  `K=(1)/(2)mv^(2)`, where K is the kinetic energy in Joules, m is the mass in kg, and v is the velocity in m/s
• Substitute in the values
• 
  `K=(1)/(2)* 600* 22^(2)`
• 
  `K=(1)/(2)* 600* 484`
• 
  `K=(1)/(2)* 290400`
• 
  `K=145200`