Your answer should always be stated in joules (J), which is the standard unit of measurement for kinetic energy. It is equivalent to 1 kg * m2/s2.

Tare the balance. Before you weigh your object, you must set it to zero. Zeroing out the scale is called taring. [6] X Research source Place your object in the balance. Gently, place the object on the balance and record its mass in kilograms. If necessary, convert grams to kilograms. For the final calculation, the mass must be in kilograms.

Velocity is defined by the equation, displacement divided by time: V = d/t. Velocity is a vector quantity, meaning it has both a magnitude and a direction. Magnitude is the number value that quantifies the speed, while the direction is the direction in which the speed takes place during motion. For example, an object’s velocity can be 80 m/s or -80 m/s depending on the direction of travel. To calculate velocity, simply divide the distance the object traveled by the time it took to travel that distance.

Your answer should always be stated in joules (J), which is the standard unit of measurement for kinetic energy. It is equivalent to 1 kg * m2/s2.

KE = 0. 5 x mv2 KE = 0. 5 x 55 x (3. 87)2

KE = 0. 5 x 55 x (3. 87)2 KE = 0. 5 x 55 x 14. 97 KE = 411. 675 J

Your answer should always be stated in joules (J), which is the standard unit of measurement for kinetic energy. It is equivalent to 1 kg * m2/s2.

Example 1: What is the velocity of an object with a mass of 30 kg and a kinetic energy of 500 J? KE = 0. 5 x mv2 500 J = 0. 5 x 30 x v2 Example 2: What is the mass of an object with a kinetic energy of 100 J and a velocity of 5 m/s? KE = 0. 5 x mv2 100 J = 0. 5 x m x 52

Example 1: What is the velocity of an object with a mass of 30 kg and a kinetic energy of 500 J? KE = 0. 5 x mv2 500 J = 0. 5 x 30 x v2 Multiply mass by 0. 5: 0. 5 x 30 = 15 Divide kinetic energy by the product: 500/15 = 33. 33 Square root to find velocity: 5. 77 m/s Example 2: What is the mass of an object with a kinetic energy of 100 J and a velocity of 5 m/s? KE = 0. 5 x mv2 100 J = 0. 5 x m x 52 Square the velocity: 52 = 25 Multiply by 0. 5: 0. 5 x 25 = 12. 5 Divide kinetic energy by product: 100/12. 5 = 8 kg