An object is moving with a velocity of 10 m/s. What is its kinetic energy if its
Practice Questions
Q1
An object is moving with a velocity of 10 m/s. What is its kinetic energy if its mass is 2 kg? (2022)
10 J
20 J
30 J
40 J
Questions & Step-by-Step Solutions
An object is moving with a velocity of 10 m/s. What is its kinetic energy if its mass is 2 kg? (2022)
Step 1: Identify the formula for kinetic energy, which is KE = (1/2)mv².
Step 2: Identify the mass (m) of the object, which is 2 kg.
Step 3: Identify the velocity (v) of the object, which is 10 m/s.
Step 4: Substitute the values into the formula: KE = (1/2) × 2 kg × (10 m/s)².
Step 5: Calculate (10 m/s)², which is 100 m²/s².
Step 6: Multiply 2 kg by 100 m²/s² to get 200 kg·m²/s².
Step 7: Multiply 200 kg·m²/s² by (1/2), which gives 100 J.
Step 8: Conclude that the kinetic energy of the object is 100 Joules.
Kinetic Energy – Kinetic energy is the energy an object possesses due to its motion, calculated using the formula KE = (1/2)mv², where m is mass and v is velocity.
