Answer:
1000kg
Explanation:
We can use the equation "p=mv"
- p is the momentum in kg m/s
- m is the mass measured in kg
- v is the velocity measured in m/s
If we rearrange the equation to find mass (m), then the equation becomes:
m=p/v
We can substitute in the values of p and v as they are already given in the question.
So, now we just substitute in the values to get our answer.
m=p/v
m=25,000/25
m=1000kg
The weight of the boulder is 3800 N, therefore its mass i s
3800/9.8 = 387.755 kg
If the horizontal acceleration is 12.8 m/s², then the horizontal force applied is
F = (387.755 kg)*(12.8 m/s²) = 4.963 x 10³ n = 4.963 kN
Answer: 4.963 kN
This question is poorly stated, but I assume you mean what conditions are needed. It would have to be cold outside, correct?
Top of first hill:
high PE
low KE
bottom first hill:
low PE
high KE
Friction slows the speed of the roller coaster
Voltage adds in a series and the amount of voltage dropped due to each resistor in a circuit (the light bulbs are resistors) depends on the resistance of each.
Assuming equal resistance of each light bulb, the voltage dropped on each is equal and should add up to 9V (Kirchoff's Rules).
So 9V/6 = 1.5V per light bulb.
