Confusing Definition and 407 Threads

I drew out a diagram for this question and wrote out all my givens. I looked through all the formula's I have and I just can't put the pieces of the puzzle together. If anyone can help that would be greatly appreciated. Question: A 1.5kg steel mass is dropped onto a vertical compression...

Any help is appreciated! 1)A man standing on a railroad flatcar moving at 1000ft/s to the left fires a bullet, whose muzzle velocity is 1000 ft/s in the opposite direction. What does an observer on the ground see teh bullet do? *I think he sees the bullet fire away at 2000 ft/s in the...

resolving vectors problems hello, i have some questions to do but am unsure where to start on some of them, the first one is [assume the Earth's gravitational pull is 10n] 1)"A motor vessel tows a small dinghy by a rope which makes an angle of 20 degrees to the horizontal. The Tension in...

Hello everyone. I've been at this for an hour now, so I think it's about time I asked for help. We have a person on the surface of a planet with an unknown gravitational acceleration. The only measuring instrument available is a very accurate watch. The person is on top of a cliff, and...

Say there's a ball being thrown upwards (from the bottom to the top of a building) with an initial speed of 29.4 m/s for 4 seconds at an acceleration of -9.8 m/s². Now here's a few of my problems: 1.) My book says the ball would stop after 3 seconds. Wouldn't it therefore be pointless to...

As a train APPROACHES a ringing crossing gate, Stacy, a passenger on the train, hears a frequency of 440 Hz from the bell. As the train RECEDES , she hears a frequency of 410 Hz. How fast is the train traveling? (formula: f = fo (v+ vo)/(v-vs)) f= frequency that she hears fo= actual...

A train starts from rest and accelerates uniformly in a straight line until, after 10s, it attains a speed of 40m/s. It then continues to accelerate at the same rate until it has traveled a total distance of 500m. What is the distance travled by the train during the first 10s? What...