An object of mass 4 kg is moving with a velocity of 3 m/s. What is its kinetic e

An object of mass 4 kg is moving with a velocity of 3 m/s. What is its kinetic energy? (2022)

An object of mass 4 kg is moving with a velocity of 3 m/s. What is its kinetic energy? (2022)

Step 1: Identify the mass of the object. The mass is given as 4 kg.
Step 2: Identify the velocity of the object. The velocity is given as 3 m/s.
Step 3: Write down the formula for kinetic energy (KE). The formula is KE = 1/2 mv².
Step 4: Substitute the mass and velocity into the formula. This means we will calculate 1/2 × 4 kg × (3 m/s)².
Step 5: Calculate (3 m/s)². This equals 9 m²/s².
Step 6: Now substitute this value back into the equation: KE = 1/2 × 4 kg × 9 m²/s².
Step 7: Calculate 1/2 × 4 kg, which equals 2 kg.
Step 8: Now multiply 2 kg by 9 m²/s². This gives us 18 kg·m²/s², which is the same as 18 Joules (J).
Step 9: Therefore, the kinetic energy of the object is 18 J.

Kinetic Energy – Kinetic energy is the energy possessed by an object due to its motion, calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.