Answer:
Option C is correct
Explanation:
"The time is determined by the vertical distance. The formula is sqr(2d/a) = t. There still is no acceleration in the horizontal direction."
For the first drive
d = d
t = sqr(2d/a)
r = v
For the Second drive
d = ??
t = sqr(2d/a)
r = 2v
Since the times are same, equate the results.
t = d/v = d1/2v
v*d1 = 2v*d The v's cancel because they are related.
d1 = 2d.
You go twice as far as you did before.
Option C is correct
Pressure I really don’t know it’s worth a shot
- Mass of the elevator (m) = 570 Kg
- Acceleration = 1.5 m/s^2
- Distance (s) = 13 m
- Let the force be F.
- We know, F = ma,
- Therefore, F = (570 × 1.5) N = 855 N
- Angle between distance and force (θ) = 0°
- We know, work done = F s Cos θ
- Therefore, work done by the cable during this part
- = (855 × 13 × Cos 0°) J
- = (855 × 13 × 1) J
- = 11115 J
<u>Answer</u><u>:</u>
<u>1</u><u>1</u><u>1</u><u>1</u><u>5</u><u> </u><u>J</u>
Hope you could get an idea from here.
Doubt clarification - use comment section.
While the object is up high, it has some amount of gravitational potential energy. As it falls, it loses some gravitational potential energy, and THAT energy turns into the object's energy of motion ... called kinetic energy.
The correct answer choice is<em> b .</em>
