Samantha pushes a 100 kg crate on a ramp that makes 14.3 degrees with the horizontal. What is the change in potential energy of this crate after Samantha pushes it for 8.50 m along the ramp?

Explanation:

The Work/ Energy principle states that the increase in the body's total energy is equal to the total work done on a body. Mathematically it can be expressed as:

So, we can find the change in potential energy of this crate finding the work done by it. The work can be calculated as:

Where:

Assuming the gravity of Earth as:

And using the picture I attache you:

The magnitude of the force is given by:

Therefore:

i'm only doing this for the points : (

explanation:

i'm only doing this the points

total distance travelled = 60 miles

total time taken =1.5 hours

average speed = total distance / total time

60 / 1.5

= 40

therefore, average speed = 40 m/h

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