Gravity is ~9.8ms-2 or in your case they simplify this to 10ms-2
The reason gravity is negative is because of the direction of the ball. Since we are considering upwards to have a positive velocity and downwards to have a negative velocity, if gravity has a downward nature, then it should be...
To determine the voltage I did voltage/number of globes:
24/16 = 1.5V per globe
- Not sure if this is correct or not
To determine current, I figured out using resistance formulas that the resistance for each set of 8 globes is 15 ohms
R = V/I
24/3.2 = 7.5 ohms total resistance
7.5-1 = 2 * 15-1...
Whenever you have a problem like this, you should always write down what you know,
For example they gave you the initial velocity, the acceleration and time.
Write it down something like this with the correct units
u = 14ms-1
a = -10ms-2
t = 1s
From there if you look at motion formulae, there's...