First you must calculate the speed of Amy and speed of Bill.
Now calculate the difference between Bill's speed and Amy's speed.
Amy's average speed is not faster. Bill's average speed is faster than Amy's by 6 m/sec.
Hope this helps.
r3t40
The final velocity of the rocket is 77.5 m/s in the direction of motion
Explanation:
The given in the problem is:
1. The rocket travels 600 m
2. It starts from rest
3. It is being accelerated uniformly at rate 5 m/s²
We need to find the final velocity
We can use this rule to solve the problem
→ v² = u² + 2 a s
where v is the final velocity, u is the initial velocity, s is the distance
and a is the acceleration
→ u = 0 m/s , a = 5 m/s² , s = 600 m
Substitute these values in the rule above
→ v² = (0)² + 2 (5)(600)
→ v² = 6000
Take √ for both sides
→ v = 77.5 m/s in the direction of motion
The final velocity of the rocket is 77.5 m/s in the direction of motion
Learn more:
You can learn more about the change in velocity in brainly.com/question/12639288
#LearnwithBrainly
I think it’s A. Hope it helps
Answer:
2.13 s
Explanation:
Hi!
At t = 0s the rocket is at rest in its platform, so the intial speed is zero. I f the acceleration is A, then the height Y, and the speed V are:
We nedd to find time T during which the rocket engine provides upward acceleration. We know that:
With these 2 equations we can find A and T (dropping units for simplicity):
Answer:
A
Explanation:
When you dropping the swing, it increases the kinetic energy. In the middle, that is when it is at it's fullest potential. As it makes its way up, it pushes again the gravitational force, and soon, the swing will stop at the top for a VERY SHORT AND SMALL period of time. That is when it is at it's very weakest point, making the answer, indeed, A.