# An object has a mass of #4 kg#. The object's kinetic energy uniformly changes from #120 KJ# to # 64KJ# over #t in [0,6s]#. What is the average speed of the object?

The average speed is

The kinetic energy is

Therefore,

and,

The equation of the line is

So,

So,

By signing up, you agree to our Terms of Service and Privacy Policy

The average speed of the object is 8 meters per second.

By signing up, you agree to our Terms of Service and Privacy Policy

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

- An object has a mass of #3 kg#. The object's kinetic energy uniformly changes from #12 KJ# to # 72KJ# over #t in [0,5s]#. What is the average speed of the object?
- What is the speed of an object that travels from #(4,-7,1) # to #(-1,3,-8) # over #6 s#?
- An object is at rest at #(7 ,9 ,4 )# and constantly accelerates at a rate of #7/4 m/s^2# as it moves to point B. If point B is at #(7 ,1 ,6 )#, how long will it take for the object to reach point B? Assume that all coordinates are in meters.
- Work out? -two bodies are placed one meter a part. How much further should they be displaced in order to reduce the gravitational force between them by 1/16------? Thanks
- An object has a mass of #4 kg#. The object's kinetic energy uniformly changes from #16 KJ# to # 96KJ# over #t in [0, 6 s]#. What is the average speed of the object?

- 98% accuracy study help
- Covers math, physics, chemistry, biology, and more
- Step-by-step, in-depth guides
- Readily available 24/7