Answer:
a) 
b) a= 1.79 m/s²
θ = 41.98⁰
Explanation:
arc radius = 12 m
constant speed = 4.00 m/s
(a) centripetal acceleration
= 1.33 m/s²
(b) now we have given
now,
a= 1.79 m/s²
direction
θ = 41.98⁰
Ok so I’m pretty sure the answer would be 2 because the mass of the rock would have the same mass on Earth as it has on the moon. Also the Density of a solid object remains constant meaning it doesn’t change. But the weight would change because the Earths gravitational pull is more than that of the moon. I hope this helped!
Objects have mechanical energy if they are in motion and/or if they are at some position relative to a zero potential energy position (for example, a brick held at a vertical position above the ground or zero height position). A moving car possesses mechanical energy due to its motion (kineticenergy).
