When an object like a ball changes direction or is stopped, this is caused by inertia. Specifically, inertia is the when an object continues in its same path and it won’t stop moving until another force causes it stop moving or change directions. The history of inertia began hundreds of...Read More
The answer to this is C. The formula that you should follow for this is the amount of work that is done on your car is equal to KE. The formula for this is Fnetd. This will then be multiplied by 50 so that the proper answer will be given. The equation that you are going to use should be Fnet =...Read More
The correct answer is option B – 75 joules Since kinetic energy= 0.5mv^2 KE1 = (0.5(50)(2^2) = 100 KE2 = (0.5(50)(1^2) = 25 To calculate the KE at the two different velocities then subtract them. KE = (0.5(50)(2^2)) - (0.5(50)(1^2)) = 100-25 = 75 kgm/s^2 Keep in mind that kilogram meters...Read More
There are specific simple machines in science. These six simple machines include the lever which is like a teeter-totter. The pulley does as it says. It pulls things up to something in the air. There are different kinds of, including the first class, second class, and third class. There are...Read More
Work is known to be the ability to do something. For example, when you try to lift something up from the ground, you are doing work. What you will use in order to do this type of work is energy. They actually go hand in hand together with the various things that you do.
Even when you are...Read More
The correct answer to this question is D. Cardio-respiratory endurance is a measurement of how well a body's heart, lungs, and muscles work in partnership to keep a person's body active over a period of physical exertion.
In other words, the body's circulatory and respiratory systems are...Read More