Physics

Replies / Views	Last post
A same-size iron ball and wooden ball are dropped simultaneously from a tower and reach the ground ... Started by aabwk4	1 Replies 132 Views	Jul 29, 2018 by mariahkathleeen
The force on a dropped apple hitting the ground depends upon A) the speed of the apple just ... Started by plus1	3 Replies 896 Views	Jul 29, 2018 by Ksanderson1296
Which produces more force: driving into a very massive concrete wall with no give, or having a ... Started by K@	1 Replies 107 Views	Jul 29, 2018 by momo1250
Compared with falling on a stone floor, a wine glass may not break when it falls on a carpeted floor ... Started by tfester	1 Replies 528 Views	Jul 29, 2018 by duke02
A heavy truck and a small car rolling down a hill at the same speed are forced to stop in the same ... Started by Ebrown	1 Replies 119 Views	Jul 29, 2018 by brittanywood
A cannon recoils while firing a cannonball. The speed of the cannon's recoil is relatively small ... Started by Themember4	3 Replies 147 Views	Jul 29, 2018 by moormoney
The greater efficiency achieved with the curved blades of a Pelton wheel is due to A) bouncing. ... Started by 809779	1 Replies 49 Views	Jul 29, 2018 by amandanbreshears
As Bronco Brown steps off a hovering high-flying helicopter and falls through the air, he ... Started by 123654777	1 Replies 117 Views	Jul 29, 2018 by ilianabrrr
A softer landing occurs when an falling object bounces from a surface A) in a extended time. B) ... Started by skymedlock	1 Replies 126 Views	Jul 29, 2018 by Moriaki
You're driving down the highway and a bug spatters into your windshield. Which undergoes the greater ... Started by ENagel	3 Replies 59 Views	Jul 29, 2018 by joneynes
The conservation of momentum is most closely related to A) Newton's 1st law. B) Newton's 2nd ... Started by sheilaspns	1 Replies 106 Views	Jul 29, 2018 by Yixagurpuldink
When bullets are fired from an airplane in the forward direction, the momentum of the airplane is ... Started by nautica902	1 Replies 218 Views	Jul 29, 2018 by Dominic
A 2-kg rifle that is suspended by strings fires a 0.01-kg bullet at 200 m/s. The recoil velocity of ... Started by debasdf	1 Replies 63 Views	Jul 29, 2018 by zoeyesther
An open freight car rolls friction free along a horizontal track in a pouring rain that falls ... Started by Themember4	3 Replies 90 Views	Jul 29, 2018 by Ddddd
A fan attached to an ice sailcraft stalled on a windless day blows air into the sail that bounces ... Started by LCritchfi	1 Replies 38 Views	Jul 29, 2018 by Jordin Calloway
A 5-kg shark swimming at 1 m/s swallows an absent-minded 1-kg fish swimming toward it at 4 m/s. The ... Started by PhilipSeeMore	1 Replies 101 Views	Jul 29, 2018 by chloejackso
Two identical freight cars roll without friction (one at 1 m/s, the other at 2 m/s) toward each ... Started by ashley	1 Replies 76 Views	Jul 29, 2018 by otokexnaru
Consider massive gliders that slide friction-free along a horizontal air track. Glider A has a mass ... Started by folubunmi	3 Replies 100 Views	Jul 29, 2018 by elyse44
Two 5000-kg rail cars roll without friction (one at 1 m/s, the other at 2 m/s) toward each other on ... Started by hbsimmons88	1 Replies 99 Views	Jul 29, 2018 by fraziera112
A 5000-kg freight car collides with a 10,000-kg freight car at rest. They couple upon collision and ... Started by maychende	1 Replies 117 Views	Jul 29, 2018 by GCabra
When a vertically falling firecracker bursts, the vector sum of momentum fragments A) in the ... Started by Metfan725	1 Replies 93 Views	Jul 29, 2018 by amcvicar
Two vehicles with equal magnitudes of momentum traveling at right angles to each other undergo an ... Started by pane00	3 Replies 36 Views	Jul 29, 2018 by Leostella20
The work you do when pushing a shopping cart a given distance while applying twice as much force is ... Started by ghost!	1 Replies 86 Views	Jul 29, 2018 by huda
The work done in pushing a TV set a distance of 2 m with an average force of 20 N is A) 2 J. B) ... Started by torybrooks	1 Replies 78 Views	Jul 29, 2018 by pangili4
If you do work on a skateboard loaded with friends in one-third the usual time, you expend A) one ... Started by FButt	1 Replies 33 Views	Jul 29, 2018 by briezy