Calculate the kinetic energy of an elephant (mass = 5 tonnes) charging at a speed of 36km/h.
5 tonnes - 5000 kg.
V = 36km/h = 36000m/3600s = 10 m/s.
KE = 0.5M*V^2 = 0.5*5000*10^2 =
To calculate the kinetic energy of an object, you need to know its mass (m) and its velocity (v). The formula for kinetic energy (K.E.) is:
K.E. = 0.5 * m * v^2
First, let's convert the mass of the elephant to kilograms. Since 1 tonne is equal to 1000 kilograms, the mass of the elephant is:
m = 5 tonnes * 1000 kg/tonne = 5000 kg
Next, let's convert the speed of the elephant to meters per second (m/s). Since 1 kilometer is equal to 1000 meters, and 1 hour is equal to 3600 seconds, the speed of the elephant is:
v = 36 km/h * (1000 m/km) / (3600 s/h) = 10 m/s
Now, plug the values of mass and velocity into the formula:
K.E. = 0.5 * 5000 kg * (10 m/s)^2 = 0.5 * 5000 kg * 100 m^2/s^2 = 0.5 * 500,000 kg m^2/s^2
Therefore, the kinetic energy of the elephant is 250,000 kg m^2/s^2.