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Physics 101 Mechanics Q&A Archive of October 10, 2021

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October 10 of 2021

On earth, two parts of a space probe weigh  11500 N and  4500 N. These parts are separated by a center-to-center distance of  15.2 m and may be treated as uniform spherical objects. Find the magnitude of the gravitational force that each part exerts on the other out in space, far from any other…
33. Use the data below to construct a labeled position v. time graph. Then, create a velocity \( v \), time graph with labeled axes. Finally, create an acceleration v. time graph with labeled axes. (7) \begin{tabular}{|l|l|} \hline Time (s) & Position (m) \\ \hline 0 & \( -2 \) \\ \hline 1 & \(…
You are a physics teacher on the first floor of a four story high school, You notice a water balloon fall past your windows in approximately a tenth of a second \( (0.1 \mathrm{~s}) \). You measure your window to be \( 1.0 \mathrm{~m} \) from the bottom of the floor with the window itself \(…
A business jet of mass 20000 kg takes off when the thrust for each of two engines is 30000 N . Find its acceleration
how to measure the maximum kinetic energy of someone sprinting 100 metres.
How would you use the garden hose, stopwatch, marble, measuring tape, and slope to measure displacement and elapsed time? Do not forget to take a photo of your actual set-up of the experiment.
A woman rides a carnival Ferris wheel at a radius 20 m, completing 5.4 turns about its horizontal axis every minute. What are (a) the period of the motion, and the magnitude of her centripetal acceleration at (b) the highest point and (c) the lowest point?
As we will see in a future chapter, the time for a car to come to rest in a collision is always about 0.1 s. Ideally, the front of the car will crumple as this happens, with the passenger compartment staying intact. If a car is moving at 15 m/s and hits a fixed obstacle, coming to rest in 0.10…
When you stop a car on a very slick icy pavement, the acceleration of your car is approximately –1.0 m/s². If you are driving on icy pavement at 30 m/s (about 65 mph) and hit your brakes, how much distance will your car travel before coming to rest?
Passengers on the Giant Drop, a free-fall ride at Six Flags Great America, sit in cars that are raised to the top of a tower. The cars are then released for 2.6 s of free fall. How fast are the passengers moving at the end of this speeding up phase of the ride? If the cars in which they ride…
A ball moving to the right traverses the ramp shown below. Sketch a graph of the velocity versus time and directly below it, using the same scale for the time axis, sketch a graph of the acceleration versus time
Car 1 was sitting at rest when it was hit from the rear by car 2 of identical mass. Both cars had their breaks on and they skidded together 6 m in the original direction of motion. If the stopping force is ~ 0.7 ´? (combined weight of the cars) , i.e., ? = 0.7, find the approximate speed of car…
On earth, two parts of a space probe weigh  11500 N and  4500 N. These parts are separated by a center-to-center distance of  15.2 m and may be treated as uniform spherical objects. Find the magnitude of the gravitational force that each part exerts on the other out in space, far from any other…
You are a physics teacher on the first floor of a four story high school, You notice a water balloon fall past your windows in approximately a tenth of a second \( (0.1 \mathrm{~s}) \). You measure your window to be \( 1.0 \mathrm{~m} \) from the bottom of the floor with the window itself \(…
A business jet of mass 20000 kg takes off when the thrust for each of two engines is 30000 N . Find its acceleration
how to measure the maximum kinetic energy of someone sprinting 100 metres.
A woman rides a carnival Ferris wheel at a radius 20 m, completing 5.4 turns about its horizontal axis every minute. What are (a) the period of the motion, and the magnitude of her centripetal acceleration at (b) the highest point and (c) the lowest point?
As we will see in a future chapter, the time for a car to come to rest in a collision is always about 0.1 s. Ideally, the front of the car will crumple as this happens, with the passenger compartment staying intact. If a car is moving at 15 m/s and hits a fixed obstacle, coming to rest in 0.10…
When you stop a car on a very slick icy pavement, the acceleration of your car is approximately –1.0 m/s². If you are driving on icy pavement at 30 m/s (about 65 mph) and hit your brakes, how much distance will your car travel before coming to rest?
Passengers on the Giant Drop, a free-fall ride at Six Flags Great America, sit in cars that are raised to the top of a tower. The cars are then released for 2.6 s of free fall. How fast are the passengers moving at the end of this speeding up phase of the ride? If the cars in which they ride…
A ball moving to the right traverses the ramp shown below. Sketch a graph of the velocity versus time and directly below it, using the same scale for the time axis, sketch a graph of the acceleration versus time