Question

a spaceship has a mass of 20000kg. suppose it travels at 10m/s. find the kinetic energy possessed by it. e=? e = 1/2 mv² m= e= v= a car is travelling at a velocity of 10 m/s and it has a mass of 250 kg. compute its kinetic energy? e=? e = 1/2 mv² m= e= v=

Explanation:

Step1: Identify values for spaceship

For the spaceship, $m = 20000\ kg$ and $v = 10\ m/s$.

Step2: Calculate spaceship's kinetic energy

Using the formula $E=\frac{1}{2}mv^{2}$, we substitute the values: $E=\frac{1}{2}\times20000\times10^{2}= \frac{1}{2}\times20000\times100 = 1000000\ J$.

Step3: Identify values for car

For the car, $m = 250\ kg$ and $v = 10\ m/s$.

Step4: Calculate car's kinetic energy

Using the formula $E=\frac{1}{2}mv^{2}$, we substitute the values: $E=\frac{1}{2}\times250\times10^{2}=\frac{1}{2}\times250\times100 = 12500\ J$.

Answer:

Spaceship's kinetic energy: $1000000\ J$
Car's kinetic energy: $12500\ J$