Recent content by Jessicaelleig

  1. J

    How Do Physics Principles Explain a Car's Trajectory and Collision Dynamics?

    Velocity, displacement? Please help me to solve this! I have no idea! The brakes of a car failed and the car travels at a constant velocity of 45 m/s off a 27 m cliff. A) How far from the cliff does the car hit the ground? B)When it hits the ground, it skids off 13 m/s with a...
  2. J

    Momentum, conservation of momentum

    Conservation of momentum! help please!? A m1 = 0.450 kg block is released from rest at the top of a frictionless track h1 = 2.85 m above the top of a table. It then collides elastically with a 1.00 kg mass that is initially at rest on the table, as shown in Figure P6.47. Figure P6.47...
  3. J

    How Does Friction Affect Spring Compression and Block Displacement?

    thanks! anything else? I am so confused
  4. J

    Accelerating car, kinematics problem

    A 2.3 103 kg car starts from rest and accelerates along a horizontal roadway to +17 m/s in 21 s. Assume that air resistance remains constant at -500 N during this time. Find (a) the average power developed by the engine and (b) the instantaneous power developed at t = 15 s. I am...
  5. J

    How Does Friction Affect Spring Compression and Block Displacement?

    Two identical massless springs of constant k = 200 N/m are fixed at opposite ends of a level track, as shown in Figure P5.62. A 5.90 kg block is pressed against the left spring, compressing it by 0.150 m. The block (initially at rest) is then released, as shown in Figure P5.62a. The entire track...
  6. J

    2d Projectles Motion/Kinematics

    HI guys, I am having a lot of trouble with determining initial velocity, x and y components etc. Can someone please help me with this Sara drives a rocket sled from rest 25 m up a 15 degree ramp at an acceleration of 8 m/s2. Whats the final velocity? Thank you
  7. J

    Solving a Difficult Projectile Motion Problem: How Far is the Diagonal Distance?

    thank you :)
  8. J

    How Far Is the Diagonal Distance from the Ramp to the Final Resting Place?

    That's what I am trying to figure out with the different x and y components. Do you have any idea how to solve?
  9. J

    Solving a Difficult Projectile Motion Problem: How Far is the Diagonal Distance?

    Ronson drives a rocket sled from rest 25 m up from a15 degree ramp at an acceleration of 8.0 m/s2. The rocket cuts off at the end of the ramp, which happens to be atthe edge of a 75 m high cliff. He freefalls in his sled until he bounces on a trampoline, which is on a 30.0 m high platform, and...
  10. J

    How Far Is the Diagonal Distance from the Ramp to the Final Resting Place?

    sry its supposed to be "Ronson drives a rocket sled from rest 25 m up from a15 degree ramp at an acceleration of 8.0 m/s2."
  11. J

    How Far Is the Diagonal Distance from the Ramp to the Final Resting Place?

    can anyone please help?
  12. J

    How Far Is the Diagonal Distance from the Ramp to the Final Resting Place?

    Ronson drives a rocket sled from rest m up from a15 degree ramp at an acceleration of 8.0 m/s2. The rocket cuts off at the end of the ramp, which happens to be atthe edge of a 75 m high cliff. He freefalls in his sled until he bounces on a trampoline, which is on a 30.0 m high platform, and...