1. What is the kinetic Energy of a 1500kg object moving at 21 m/s? 2. A cat decides to jump down from the top of a bookshelf. It has 68 J of mechanical energy and 19 J of gravitational potential energy. What is the kinetic energy of the cat?

3. What is the kinetic energy of a 423 kg object moving at 14 m/s?

please i needed for grade

The formula for working out kinetic energy is

=122

KE = kinetic energy
m = mass of a body
v = velocity of a body

kinetic energy (KE) is equal to half of an object's mass (1/2*m) multiplied by the velocity squared. For example, if a an object with a mass of 10 kg (m = 10 kg) is moving at a velocity of 5 meters per second (v = 5 m/s), the kinetic energy is equal to 125 Joules, or (1/2 * 10 kg) * 5 m/s2.

For the first one I think :

KE = 330750 J

I’m not sure about the second one- sorry

The third is

KE = 41454 J

Hope it helps and it is correct, sorry if it isn’t !

The objects do not reach terminal velocity         there is not enough time from the time the object falls from when it hits the ground to achieve terminal velocity. an object must be placed higher to achieve terminal velocity in order to be in free fall.