The racecar has 7,812,500 Joules of kinetic energy.
Kinetic energy (KE) is the energy possessed by an object due to its motion. It is given by the formula KE = 1/2 mv^2, where m is the mass of the object and v is its velocity.
To find the kinetic energy of a racecar, we need to use this formula.
Given: mass of the racecar (m) = 1000 kg, top speed (v) = 125 m/s
Plugging these values into the formula, we have KE = 1/2 x 1000 kg x (125 m/s)^2. Simplifying further:
KE = 1/2 x 1000 kg x 15625 m^2/s^2
KE = 7812500 Joules
Therefore, the racecar has 7,812,500 Joules of kinetic energy.