subject
Physics, 20.11.2020 06:10 MorgannJ

A computational model predicts the speed of a roller coaster car at different heights given its speed at the lowest height of its journey, which is at ground level. The speed at the lowest point is 30 m/s. What is the prediction for its speed when it is at a height of 20 m?(1 point) 18.8 m/s

15.9 m/s

37.5 m/s

22.5 m/

ansver
Answers: 3

Other questions on the subject: Physics

image
Physics, 22.06.2019 13:00, neekog11
The law of the conservation of momentum says that the total momentum of any closed and isolated system cannot
Answers: 1
image
Physics, 22.06.2019 15:10, tddreviews
Where do magnetic lines of force enter earth?
Answers: 3
image
Physics, 22.06.2019 16:00, cmir
The electric field direction is defined by the direction of the force felt by (select one of the following answers): 1. a negative charge. 2. a positive charge. 3. both positive and negative charges.
Answers: 2
image
Physics, 22.06.2019 19:30, rprest00
Amass m = 74 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius r = 18.4 m and finally a flat straight section at the same height as the center of the loop (18.4 m off the ground). since the mass would not make it around the loop if released from the height of the top of the loop (do you know why? ) it must be released above the top of the loop-the-loop height. (assume the mass never leaves the smooth track at any point on its path.) 1. what is the minimum speed the block must have at the top of the loop to make it around the loop-the-loop without leaving the track? 2. what height above the ground must the mass begin to make it around the loop-the-loop? 3. if the mass has just enough speed to make it around the loop without leaving the track, what will its speed be at the bottom of the loop? 4. if the mass has just enough speed to make it around the loop without leaving the track, what is its speed at the final flat level (18.4 m off the ground)? 5. now a spring with spring constant k = 15600 n/m is used on the final flat surface to stop the mass. how far does the spring compress?
Answers: 3
You know the right answer?
A computational model predicts the speed of a roller coaster car at different heights given its spee...

Questions in other subjects:

Konu
Mathematics, 15.01.2020 12:31
Konu
History, 15.01.2020 12:31