answersLogoWhite

0


Best Answer

IKE = ½mv² = ½ × 20 kg × (2.8 m/s)² = 78.4 kgm²/s² = 78.4 J.

User Avatar

Wiki User

8y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What is a kinetic energy of an object that has a mass of 20 kilograms and a speed of 2.8 ms?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

What is the kinetic energy of an object that has a mass of twenty kilograms and a speed of two point eight?

kinetic energy is 78.4 J.


What is the kinetic energy of an object that has a mass of 20 kilograms and a speed of 2.8ms?

A. 56 j


What is a kinetic energy of an object that has mass of 20 kilograms and speed of 2.8ms?

78.4 joules at 2.8m/s


If the speed of an object doubles the kinetic energy of the object?

At twice the speed, the kinetic energy will be four times greater.


How does kinetic energy affect speed?

The kinetic energy of an object is proportional to the square of its speed.


How factors are used to calculate the kinetic energy of an object?

KE = (1/2)mv2 where m = mass (in kilograms), and v = velocity (in meters/second) this gives you the kinetic energy in units of Joules


If speed is tripled then its kinetic energy of a mass is?

The formula for Kinetic Energy of an object is mv2/2 where m: mass of object and v:velocity of object Therefore when the speed of an object is tripled, then its kinetic energy becomes 9 times


What The build up of speed in a moving object?

Potential energy, which can be released as kinetic energy. Kinetic energy not the build up of speed in a moving object.


What is the speed of an object increases its kinetic energy .?

The kinetic energy depends on both mass and speed. If either mass or speed increase, the kinetic energy will increase as well.


What does the amount of kinetic energy of a moving object depend?

The kinetic energy depends on the object's mass, and on its speed.


What makes an object have more kinetic energy?

An object has more kinetic energy when the temperature gets hotter. The particle's speed increase and begin to flow more rapidly. An object has more kinetic energy when the temperature gets hotter. The particle's speed increase and begin to flow more rapidly.


What is the energy of a system by virtue of its motion?

That's called kinetic energy. The formula is: Kinetic energy = (1/2) x mass x velocity2. If mass is in kilograms, and velocity (or speed, really) in meters per second, the energy will be in Joules.