mistake: i didn't use the whole equation to figure out the horizontal acceleration.
i should have used this equation:
x=v_f*T +1/2 at^2
thanks for all the help. i really appreciate it :D
yeah i made a mistake with the number. i got 0.685 sec for the time when i plugged 230 m in instead of 2.40 N.
for that answer, i got 1.90 meters but i was still wrong.
as for accelerating horizontally, wouldn't it be accelerating vertically instead of horizontally?
Homework Statement
A rocket-powered hockey puck has a thrust of 2.40 N and a total mass of 2.40 kg. It is released from rest on a frictionless table, 3.80 m from the edge of a 2.30 m drop. The front of the rocket is pointed directly toward the edge.
How far does the puck land from the base...
Homework Statement
A well-lubricated bicycle wheel spins a long time before stopping. Suppose a wheel initially rotating at 170 rpm takes 70 s to stop.
A)If the angular acceleration is constant, how many revolutions does the wheel make while stopping?
Homework Equations
i used...
i added 1122 m/s and 19074 together then multiplied by 1000 to get km...wait, i did that wrong didn't i? do i have to use another equation to figure out the other height..?
so i add those two together right? its asking for the answer in km. so if i add the two distances together and multiply by 1000, i'll get the right answer? (i already have an answer but I'm not sure if it's right. i got 20196000 km)
then i use d=vi*t+1/2at^2 right? when i used that equation, i got 38709 m as my answer. is that correct or do i need to rethink what equation i need to use?
Homework Statement
A 200 kg weather rocket is loaded with 100 kg of fuel and fired straight up. It accelerates upward at 33 m/s^2 for 34 s, then runs out of fuel. Ignroe any air resistance effects.
A) what is the rocket's maximum altitude?
B) how long is the rocket in the air?
Homework...