Question

A go cart with a mass of 60 kg is moving at a rate of 10 m/s. How much Kinetic Energy does the go cart have?

Answer 1

Answer:

3000 J

Explanation:

The kinetic energy of an object can be found by using the formula

$k = \frac{1}{2} m {v}^{2}$

m is the mass in kg

v is the velocity in m/s

From the question

m = 60 kg

v = 10 m/s

We have

$k = \frac{1}{2} \times 60 \times {10}^{2} \\ = 30 \times 100 \\ = 3000$

We have the final answer as

3000 J

Hope this helps you

Answer 2

Answer:

$\boxed {\boxed {\sf 3000 \ J}}$

Explanation:

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

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

The mass of the go-cart is 60 kilograms and the velocity is 10 meters per second.

• m= 60 kg
• v= 10 m/s

Substitute the values into the formula.

$KE= \frac{1}{2} (60 \ kg)(10 \ m/s)^2$

Solve the exponent.

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

$KE = \frac{ 1}{2} (60 \ kg)(100 \ m^2/s^2)$

Multiply the numbers together.

$KE= 30 \ kg * 100 \ m^2/s^2$

$KE= 3000 \ kg*m^2/s^2$

Convert the units. 1 kilogram meter squared per second squared is equal to 1 Joule, so our answer of 3000 kg*m²/s² equals 3000 Joules.

$KE= 3000 \ J$

The go-cart has 3000 Joules of kinetic energy.