A motorboat traveling on a straight course slows uniformly from 65 km/h to 35 km/h in a distance
of 45 m.
Part A
What is the magnitude of the boat's acceleration?

2.572 m/s²

Explanation:

Convert the given initial velocity and final velocity rates to m/s:

The motorboat's displacement is 45 m during this time.

We are trying to find the acceleration of the boat.

We have the variables v₀, v, a, and Δx. Find the constant acceleration equation that contains all four of these variables.

Substitute the known values into the equation.

The magnitude of the boat's acceleration is |-2.572| = 2.572 m/s².

! 55 !  

write a paragraph or story to explain the transformation between potential and kinetic energy as shown in your picture or model.  

you should have at least 5 complete sentences with a main idea and supporting details.  

you must include the following words:  

potential energy

kinetic energy

mechanical energy

conservation of energy

dude, this is hard lol : ))

what was the acceleration of the 2 kg cart?

⇒ 16.0 cm/s2

what was the acceleration of the 4 kg cart?

⇒ 8.1 cm/s2

what was the acceleration of the 6 kg cart?

⇒ 5.3 cm/s2