Group dno bridge. One student, who professes to know what he is talking about (“Of course I'm sure-with physics, I'm always sure."), says that they can easily make the jump. He gives the following data: The car weighs 2100 pounds, with passengers and luggage. Right before the gap, there's a ramp that will launch the car at an angle of 30°. The gap is 10 feet wide. He then suggests that they should drive the car at a speed of 50 mph in order to make the jump. In the movie Road Trip, some students are seeking to jump a car across a gap in a If the car actually went airborne at a speed of 50 mph from a 10 ft ramp at angle of 30° with respect to the horizontal. What are the initial x and y velocities? b. How far would it travel before landing? c. What was the maximum height from ground the car reached? d. Does the mass of the car make any difference in your calculation?

A jogger runs along the dike with a speed of 4.2 m/s in a direction 30 degrees above the x-axis.  What is the y component of the jogger's velocity?  Give your answer to one decimal place.

A commercial airplane is coming in for a landing. Just before it hits the runway it is moving at 76 m/s. The plane has a mass of 20,000 kg. The runway is 1.6km long and, obviously, the airplane needs to be stopped before it reaches the end of the runway. How large is the braking force the airplane needs to stop safely before the end of the runway?

I was given this problem, and I don't really know what to do about the fact that the normal force doesn't equal the weight for this problem. How am I supposed to find the kinetic friction coefficient now? A box of mass 2,463g is on level ground being pulled by a force of 6.41N at angle 47.2 above horizontal. If the block is moving with a constant velocity, what is the kinetic friction coefficient? (Hint: the normal force does not always equal the weight; it does not in this case.)

While walking on water, an arctic wind freezes the water beneath your feet and you now find yourself stuck in the middle of a 15m diameter lake on top of a frictionless layer of ice.  Unable to just walk off, you decide to push off your physics book with a force of 80.0N for 0.1s.  How long in minutes will it take you to reach the shore if your mass is 75kg?

Princess Leia once fell out of the spaceship.  She came back with the Force.  From the farthest spot (zero speed) back to the spaceship was 10 meters, and it took 4 second.  She weighed 45 kg.  Assume constant force during this trip.  Find the force needed.

help on this please!!

A ball with mass 0.3 kg is thrown upward with initial velocity 10 m/s from the roof of a building 50 m high. Assume there is a force due to directed opposite to the velocity, air resistance of magnitude 1325 where the velocity v is measured in m/s. NOTE: Use g-9.8 m/s as the acceleration due to gravity. Round your answers to 2 decimal places. a) Find the maximum height above the ground that the ball reaches. Height: m b) Find the time that the ball hits the ground. Time: seconds c) Use a graphing utility to plot the graphs of velocity and position versus time.

A rocket is descending to the surface of Mars where g = 4 m/s ^ 2 . The rocket is initially 80 m above the planet's surface and is descending downward at 50 m/s. The mass of the rocket is 2500 kg. The rocket will land on the surface with a final velocity of 0. Our goal is to find the upward thrust force on the rocket to make this happen.   Find the thrust force on the rocket ?   Answer is 49,000 N, please show work.

Air track: two objects tied together by a string. The figure shows a glider with mass my that moves on a level, frictionless air track in a physics lab. It is connected by a string passing over a small frictionless pulley to a hanging weight with total mass m₂. The string is light and flexible, and it doesn't stretch. (a) Find the acceleration of each object and the tension in the string. (b) What happens to the acceleration when m, is two times heavier than that of m₂? (c) Now my is four times heavier than that of m₂. Calculate the distance between it traveled during the initial period of two (2) seconds after the glider started moving. The tract is long enough for the travel. Show your work that leads to your answer. Explain each step in your work to explanation -quation WILIT T