A bowling ball of mass 5 kg rolls down a slick ramp 20 meters long at a 30 degree angle to the horizontal. What is the work done by gravity during the roll, in Joules

The work done by gravity during the roll is 490.6 J

Explanation:

The work (W) is:

Where:

F: is the force

d: is the displacement = 20 m

The force is equal to the weight (W) in the x component:

Where:

m: is the mass of the bowling ball = 5 kg

g: is the gravity = 9.81 m/s²    

θ: is the degree angle to the horizontal = 30°        

Now, we can find the work:

Therefore, the work done by gravity during the roll is 490.6 J.

I hope it helps you!

prolly a beacuse the momentuem the car has increases while going down hill

the part of the wave he is travelling on is the crest