A rollercoaster has a speed of vi=9.8m/s^2 as it reaches its peak of a h=23.5m drop. What is the cars speed at the bottom of the drop, vf in m/s?
A rollercoaster has a speed of vi=9.8m/s^2 as it reaches its peak of a h=23.5m drop....
A speedboat increases its speed uniformly from vi = 20.0 m/s to vf = 29.0 m/s in a distance of Δx = 1.60 ✕ 102 m. (a) Draw a coordinate system for this situation and label the relevant quantities, including vectors. A speedboat in two positions is shown. The speedboat on the left has a speed vi with its vector pointing to the right. The speedboat on the right is at a distance of Δx (in meters) from the speedboat...
A rollercoaster train cart crests the lift hill (the first hill) at a speed of 4.0 m/s and falls down a 91 m drop, then climbs 54 m to the second hill. a) How fast is the train going at the bottom of the hill? b) How fast is the train going at the top of the second hill?
When you drop a pebble from height H, it reaches the ground with speed V if there is no air resistance. From what height should you drop it so it will reach the ground with three times the speed?
Let h = 25.5 m and vi = 11.8 m/s. Find the speed of the ball just before it hits the ground. vf = m/s Find the ball's mechanical energy at the release point. KEi + PEi = J Find the ball's mechanical energy just before it hits the ground. KEf + PEf = J Remarks Notice that the final speed does not depend on the initial release angle. Kinetic energy is not a vector. The initial kinetic energy of...
A roller coaster reaches the top of the steepest hill with a speed of 6.1 km/h . It then descends the hill, which is at an average angle of 41 ∘ and is 37.5 m long. Part A What will its speed be when it reaches the bottom? Assume μk = 0.18.
Prob. 2 A car starts from rest, accelerates at 1.5 m/s, and reaches a maximum speed vi. After that it decelerates at 2 m/s until it stops. During the entire process the car has traveled a distance of I km. (a) Sketch the velocity diagram of the particle during the process. (Leave vI as an unknown on the diagram) (b) Determine the maximum speed vi. (e) Determine the total time required.
A 540 kg roller coaster has a speed of 21.0 m/s as it reaches the lowest point on the track, which is at the bottom of a vertical curve with a radius of 13.0 m. What is the force of the track on the vehicle at this point?
A 747 airliner reaches its takeoff speed of 159 mi/h in 35.3 s. Part A What is the magnitude of its average acceleration?
Suppose the rollercoaster car in the figure passes point 1 with a speed of 220 m/s f re 1) Part A the werage force of friction is equal to 0 25 of its weight, with what speed we reach point? The distance traveled is 500 m Express your answer to two significant figures and include the appropriate units. by Value Units Submit Figure Provide feedback
A 4,500-kg roller coaster cart has a speed of 4.76 m/sm/s when it reaches its first peak at a 99.0 mm height from the ground level. After descending, it climbs up the second hill which is 84.2 mm above the ground level. How fast is the roller coaster cart at the top of the second hill? Assume there is no friction with the rails and no air resistance during the cart's motion.