Answer:
Option D.
Explanation:
Data:
- Height (h) = 9 m
- Gravity (g) = 9.8 m/s²
- Velocity Final (Vf) = ?
Use formula:
Replace:
Multiply gravity with height:
Multiply:
Solve the square root:
How fast is the ball going?
The speed is going at a speed of <u>13.3 meters per second.</u>
If they are both traveling with the same speed that means that they will reach other in the middle of the line initially between them. In other word, each will have to travel the same amount before they reach other.
Now you can calculate the time it takes for only one locomotive to travel half of the total distance between them, and that time is equal to the time you are looking for.
Use
t = S1/2 / v
where t-time, S-distance traveled , v-velocity
KE = 1/2 * m* v^2
= 1/2 * 40 * 225
= 4500 J
hope it helped
Answer:
B = 0.0404 т
Explanation:
Given
ΔE = 7.50 x 10⁻²⁵ J
μb = 927.4 x 10⁻²⁶ J/т
ΔE = 2 * μb * B
B = ΔE / 2 μb
B = 7.50 x 10⁻²⁵ / 2 * 927.4 x 10⁻²⁶
B = 7.50 / 1854.8 x 10⁻²⁵⁻⁽⁻²⁶⁾
B = 0.00404 x 10¹
B = 0.0404 т