Physics

Help pressure question

if air were pumped into a ball could the inside of the ball have so much pressure that it would be hard for something in it to move-It would obviously pop by this point, but it would have to get to th

Throwing a spinning flat rock

I can throw a flat rock quite far. Now I know it is from the air keeping it up longer but does the spinning have anything to do with it?.When the rock leaves my finger tip it spins off very quickly. I

Kinetic energy and gravitational potential energy of a pendulum

A simple pendulum consists of a 2 m length rope and 3 kg bob. at one specific instant the bob has a speed of 4 m/s and the rope makes an angle of 30 degrees to the vertical. a.) What is the pendulums

My popcorn bag self-vacuumed all the air out of itself. What the

Im not bothered by this, rather, amazed :P I was popping some corn, normal butter corn, and when it was done, I removed it from the microwave, like always, but, moments after I did so, it almost insta

A 3920N is traveling at 8m/s. The drivers slams on the breaks and brings the car to a rest....(force question)

1. A 3920N is traveling at 8m/s. The drivers slams on the breaks and brings the car to a rest in a distance of 10 meters. a. What is the net acceleration of the vehicle? b. What is the net force acti

What is the physics behind cross-breezes

So when I open a window, nothing much happens. But if I open a window/door on the other side of the house/room/whatever concurrently, then I get this lovely little breeze running through the room. Ho

If a 68kg object is being pulled across the hard floor with a horizontal force of 400N...(force problem)

1. If a 68kg object is being pulled across the hard floor with a horizontal force of 400N... a. What would the acceleration of the object be if it was on a frictionless floor? b. if there were fric

A car of mass 1900kg is traveling east at a speed of 24 m/s along a horizontal roadway. When its brakes are ap

A car of mass 1900kg is traveling east at a speed of 24 m/s along a horizontal roadway. When its brakes are applied, the car stops in 7.1 s. What is the average horizontal force exerted on the car whi

Physics: Force Questions

1. If a 10kg object is accelerating to the right across the ground at 5m/s squared. a. What is the net force acting on the object? b. What is the gravitational force acting on this object? c. What is

Complex physics question to do with acceleration and velocity, please help been driving me crazy

There is a car traveling at 30 ms-2 and it passes a police car. 2 seconds after the car passes the police car the police car starts accelerating at 4ms-2 until he overtakes the car. however 8 seconds

Calculating moment of inertia&torque?A Farris Wheel has its mass mF=200 kg of its rim and a radius of 8.0 m.

A Farris Wheel has its mass mF=200 kg of its rim and a radius of 8.0 m. Assume that it all mass is on the rim and spokes’ mass is negligible. (a) Calculate its moment of inertia. (b) How much torque

Falling object question

You throw a rock straight up at a speed of 12m/s. With what speed must a friend on the roof of a building that is 39m above you release point throw a second rock so that the two rocks collide 1/6 of t

Scott and jane attempt to jump a gap of 135 meters on scott's Harley....(projectile motion)

1. Scott and jane attempt to jump a gap of 135 meters on scotts Harley. If they leave the jump ramp at a speed of 35m/s and an angle of 45 degrees, do they make the jump? Please indicate which equati

Finding maximum distance until wire will break...

Ok here is the question, im confused as to which equation to use, and im almost sure you will use sin, but it may be cos... A uniform horizontal bar of length L=4m and weight 245 N is pinned to a ver

Need Help With a Physics Question (Finding Time)

Hi could someone explain to me how to solve this problem? An arrow is fired up with an initial speed of 10 m/s. How long does it take until the arrow is at its maximum height?-u = 10; a=-g; v=0 v=u+a