Question

Date Page 2. A bicycle of 15kg is moving with the velocity of 10m/s. calculate the kinetic energy. ​

Answer 1

Answer:

$\boxed {\boxed {\sf 750 \ J}}$

Explanation:

Kinetic energy is the energy an object possesses due to motion. It is calculated using the following formula.

$E_k= \frac{1}{2} mv^2$

In this formula, m is the mass and v is the velocity.

The bicycle has a mass of 15 kilograms and a velocity of 10 meters per second.

• m= 15 kg
• v= 10 m/s

Substitute the values into the formula.

$E_k= \frac {1}{2} (15 \ kg)(10 \ m/s)^2$

Solve the exponent.

• (10 m/s)²= 10 m/s * 10 m/s = 100 m²/s²

$E_k= \frac{1}{2} (15 \ kg)( 100 \ m^2/s^2)$

Multiply all the values together.

$E_k= \frac{1}{2} ( 1500 \ kg*m^2/s^2)$

$E_k= 750 \ kg*m^2/s^2$

1 kilogram meter squared per second squared is equal to 1 Joule. Therefore, our answer of 750 kg*m²/s² is equal to 750 J.

$E_k= { 750 \ J$

The kinetic energy of the bicycle is 750 Joules.