A truck of mass 2250 kg and a car of mass 1660 kg in a demolition derby are about to crash into one another. The truck is moving with a speed of 11.4 m/s at an angle of o = 50.5° and the car is moving with a speed of 4.3 m/s at an angle of e = 34.5° as indicated in the figure. The collision is perfectly inelastic. What is the x component of the velocity of the wreck just after the collision? 6.566 m/s Opts Incorrect. Submit Answer Submissions to practice problems are not permanently recorded. Tries 2/99 Previous Tries What is the y component of the velocity of the wreck just after the collision? 5.2067555 m/s Opts

The maximum force that can be put on an egg without breaking it has been determined to be 15 N.  If the 0.15 kg egg is moving at 10.0 m/s and needs to be brought to a stop.  How much time will need to be allowed for it to slow down?

A 1500 kg car traveling 30 m/s comes to a stop. The coefficient of friction between the tires and the road is 0.80. What is the acceleration of the car? What is the stopping distance?

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

Zach, whose mass is 85 kg, is in an elevator descending at 12 m/s. The elevator takes 3 s to brake to a stop on the first floor. (a) What is Zach's weight before the elevator starts breaking?(b) What is Zach's weight while the elevator is braking?

A 0.152 kg ball is attached to a string that is 62.2 cm long. The string will break if subjected to a tension force of 4.8 N. If a small child swings the ball in a horizontal circle around her head, at what velocity will the string break?

A free-falling object falls from rest and has a weight of 10 lb. The air resistance in lb of this free-falling object is 3v, where v is the velocity in ft/s. What is the velocity of the object after falling for 2 seconds? What distance has the object traveled after 2 seconds?

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?

A 2 kg otter starts from rest at the top of a muddy incline to 85 cm long and slides down to the bottom and 0.50 seconds. what net force acts on the otter for along the incline?

An object has a mass of 50 kg and is accelerating at 20 m/s2 when it hits a brick wall. What is the force applied to the brick wall?