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falcon306
Questions (17)
1.9 kg block slides along a frictionless surface at 1.8 m/s. A second block, sliding at a faster 4.5 m/s, collides with the
2 answers
5,047 views
A 40 g marble moving at 2.3 m/s strikes a 29 g marble at rest. Assume the collision is perfectly elastic and the marbles collide
1 answer
1,811 views
Marissa drags a 15 kg duffel bag 18 m across the gym floor. If the coefficient of kinetic friction between the floor and bag is
1 answer
810 views
A car is traveling at 14 m/s. How fast would the car need to go to double its kinetic energy? By what factor does the car's
2 answers
3,343 views
A 300 g bird flying along at 6.4 m/s sees a 10 g insect heading straight toward it with a speed of 34 m/s (as measured by an
2 answers
3,843 views
A 1.1 kg book is lying on a 0.77 m -high table. You pick it up and place it on a bookshelf 2.3 m above the floor.
1. How much
2 answers
1,124 views
A man standing on very slick ice fires a rifle horizontally. The mass of the man together with the rifle is 70 kg, and the mass
1 answer
874 views
A compact car has a mass of 1400kg. Assume that the car has one spring on each wheel, that the springs are identical, and that
3 answers
1,286 views
A 3.0-m-long rigid beam with a mass 130 kg is supported at each end. An 90 kg student stands 2.0 m from support 1. (beam 1 is to
1 answer
1,646 views
A spring exerts a 17 N force after being stretched by 3.0 cm from its equilibrium length. By how much will the spring force
1 answer
1,762 views
Flywheels are large, massive wheels used to store energy. They can be spun up slowly, then the wheel's energy can be released
2 answers
6,855 views
The centers of a 15 kg lead ball and a 140 g lead ball are separated by 8.0 cm.
What gravitational force does each exert on the
2 answers
9,081 views
An object's moment of inertia is 2.5 kgm^2. Its angular velocity is increasing at the rate of 3.0 rad/s^2.
What is the torque on
1 answer
2,513 views
How much force does an 88 kg astronaut exert on his chair while sitting at rest on the launch pad?
Answer: 860N Now the question:
4 answers
6,834 views
A loudspeaker of mass 24.0 {\rm kg} is suspended a distance of h = 2.20 {\rm m} below the ceiling by two cables that make equal
1 answer
1,131 views
A 1300 kg car is traveling along a straight road at 20 m/s. Two seconds later its speed is 24 m/s. What is the magnitude of the
2 answers
3,193 views
A 2000 {\rm kg} car traveling at a speed of 13 {\rm m/s} skids to a halt on wet concrete where mu_k = 0.50. How long are the
5 answers
1,542 views
Answers (6)
That really helped thank you very much
Never mind I got it!
Awesome thanks a lot!
I'm not sure how to solve for k though.
Thank you!
Thank you very much!
