Answer:
Explanation:
Since this is not parabolic motion, it is one-dimensional motion. Very simple. What we are given is
mass: 15.0 kg
initial velocity: 2.0 m/s
acceleration: .75 m/s/s
time: 6.0 seconds
Since we are looking for final velocity, the equation we need for this is
v = v0 + at that says final velocity is equal to the initial velocity plus the acceleration of the object times how long it travels. We don't have a need for the mass here at all.

Notice that one of the seconds labels to the right of the plus sign cancel out, leaving us with like units...which we HAVE to have if we want to add.
Simplifying a bit gives us
v = 2.0 m/s + 4.5 m/s so
v = 6.5 m/s
Explanation:
1 mega Hertz = 1000000 hertz
Use one of the equations of accelerated motion; V2=V1 + at ...see attached
Answer:
Explanation:
It is given that the ball is lodged in a hole in the floor of merry-go-round that is running at a constant speed.
Now the ball is moving a vertical circular motion
The position of the ball changes w.r.t to the center as it moves in a circular path i.e. vectorially it changes but its magnitude will remain the same.
The velocity of the ball is the same as merry-go-round so its magnitude remains the same but its direction will change continuously.
As the ball is moving in a circular path so a centripetal acceleration will acts towards the center so its value will be continuously changing.